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THE CANON EOS DIGITAL REBEL XT CAMERA: AN EXCEPTIONAL COMBINATION OF DESIGN, PERFORMANCE AND AFFORDABILITY

Table of Contents

I OVERVIEW II SUMMARY OF NEW AND IMPROVED FEATURES Design Image Recording Image Processing Enhanced User Controls Flash Performance Connectivity and Compatibility Power Issues Software Package III FEATURE DISCUSSION New 8 Megapixel Image Sensor New DIGIC II Imaging Processor Autofocus E-TTL II Autoflash White Balance Controls Processing Parameters Custom Functions Menus Image Display Exposure Controls Power Management Recording System Design and Construction Interfaces and Compatibility Camera Direct Printing Software IV CONCLUSION
Contents 2005 by Canon U.S.A., Inc. All Rights Reserved. Excerpts from this material may be quoted in published product reviews and articles. For further information, please contact Canon U.S.A., Inc. Public Relations Dept., (516) 328-5000.

I. OVERVIEW

Canons EOS Digital Rebel XT camera combines outstanding performance and creative control in a small and elegant package for an estimated retail price of under $1,000* complete with zoom lens. This makes the XT an exceptional value in digital single lens reflex cameras. With its DIGIC II image processor and Canon-designed and manufactured CMOS sensor, the EOS Digital Rebel XT camera has very high 8.0 megapixel resolution, low noise, exquisite color, near-instantaneous startup, speedy handling, enhanced flash control, an extensive range of settings, full compatibility with EOS system accessories, reduced power consumption and an ease of use which makes it truly remarkable. The Digital Rebel XT cameras closest relatives in the Canon DSLR lineup are the original EOS Digital Rebel and the EOS 20D models. The original Digital Rebel is the breakthrough camera that established the under $1,000 category for DSLR (Digital Single Lens Reflex) cameras when it was introduced in 2003. It has 6.3 megapixel resolution, wonderful picture quality and true ease of use. The Digital Rebel remains in the Canon lineup at a new, lower price point (estimated retail price $799* with EF-S 18-55mm zoom lens). The EOS 20D body has an estimated retail price of $1599* (with the EF-S 18-55mm lens) and is faster than the Digital Rebel XT (5 frames per second vs. 3), shoots longer bursts (23 Large/Fine JPEGs vs. 14), focuses faster, has more extensive Custom Functions (18 vs. 9) and magnesium alloy body covers (vs. polycarbonate for the Digital Rebel XT). The 20D has 8.2 megapixels to the 8.0 of the XT; the sensors have the same size pixels. The 20Ds aficionados include advanced amateurs, prosumers and professionals who need to keep an eye on equipment expenses. Of course, all these cameras have full compatibility with the vast system of Canon EF and EF-S lenses, as well as many other EOS system accessories. (* Actual selling prices are set by the dealer and may vary.) The EOS Digital Rebel, EOS Digital Rebel XT and EOS 20D are members of a family that also includes the 8.2 megapixel, 8.5 frames per second EOS-1D Mark II and the 16.7 megapixel EOS-1Ds Mark II. These cameras, and an extensive line of consumer-focused digital point-andshoots, have propelled Canon to the number one position in the digital camera business according to the NPD Group, a leading provider of retail market information. In 2004, Canon had 20.4 percent of total digital camera sales, based on

Digital Rebel

Digital Rebel XT

1D Mark II

1Ds Mark II
unit sales and revenue figures of both compact cameras and digital SLR cameras combined, according to NPD. In addition, Canon had 62.8 percent of the DSLR market and 18.6 percent of the point-and-shoot market, also both number one according to NPD. Further, according to NPD, Canon had the single best selling digital camera, the PowerShot A75, as well as the best selling digital SLR, the EOS Digital Rebel. This sell-through data is testimony to the extent to which consumers and professionals alike recognize Canon as the imaging industry leader. For example, the readers of PC Magazine recently gave Canons digital cameras their highest rankings in quality, reliability and support in an annual customer satisfaction survey. In 2004, Canon digital cameras were also honored by Macworld, C/NET, American Photo, PC World, Mobile PC Magazine, Best Magazine, Popular Science, Outside Magazine and PTN Magazine, among others. Canon is listed as one of Fortunes Most Admired Companies in America and is number 35 on Business Weeks 2004 list of Top 100 Brands. Only Canon Could Produce the EOS Digital Rebel XT In 2004, IBM received the most U.S. patents, as it had in each of the previous ten years.1 Canon was third. In the past ten years, Canon has been second on six occasions and third on four. Considering the differentials in size, sales volume and R&D investment levels between Canon2 and IBM3, Canons performance in this category is nothing short of phenomenal.

Source: United States Patent and Trademark Office (USPTO) <http://www.uspto.gov/> Source: Canon Inc. 2003 Annual Report <http://www.canon.com/ir/annual/2003/index.html> 3 Source: IBM 2003 Annual Report <http://www.ibm.com/annualreport/2003/index.shtml>
Top 3 Organizations Receiving U.S. Patents: 1995-2004
Rank IBM Matsushita Canon 2003 IBM Canon HItachi 2002 IBM Canon Micron 2001 IBM NEC Canon 2000 IBM NEC Canon 1999 IBM NEC Canon 1998 IBM Canon NEC 1997 IBM Canon NEC 1996 IBM Canon 1995 IBM Canon

Motorola U.S. Govt.

2003 Gross Reveue and R&D Investment
Organization Canon Inc. IBM Net Sales $29.9 Billion $89.1 Billion R&D Investment $2.42 Billion $5.08 Billion
Canon concentrates its research on what it calls core technologies. Currently, these include nanotechnology, ultra-fine particle technology, organic electroluminescent displays and thin-film displays. The company is in the forefront of computer-aided 3D-CAD product design and software development and is one of the leading manufacturers of semiconductor production equipment (steppers, etc.). Canon makes its own mold production equipment, as well as the tuning and measuring tools required for the development, maintenance and repair of the machinery it designs and manufactures.
Canons patents are a measure of intellectual wealth and corporate ethos. Discoveries in the core technologies are applied to products for industry, healthcare, broadcasting, business and consumers. Because Canon continues to innovate at a furious pace, each new product incorporates significant advances in electronics, mechanics, optics and software. Any new product from Canon, but especially a new digital single lens reflex camera, is the fruit of this intellectual wealth. For instance, virtually every significant piece of hardware in the new EOS Digital Rebel XT is designed and made by Canon on machinery that is also designed, made and maintained by Canon. As early as the mid-1980s, Canon made the risky and challenging decision that it would, eventually, design and manufacture its own image sensor chips for digital SLRs rather than purchase off-the-shelf image sensors from an external supplier. Canons extraordinary success in this venture has freed it from the syndrome of me-too products with the same internals as everyone elses. Similar achievements were made in the design, development and manufacturing of Canon EF lenses and DIGIC image processors, which together with Canon CMOS image sensors comprise the three main components of every Canon EOS digital camera. As it pushes the limits of technology, Canon can optimize the design, performance and cost of every key component in every new digital single lens reflex camera it makes. Canon EOS DSLRs are unique in the photography industry in terms of their design and manufacturing and, therefore, their performance and value. This is the heritage of the EOS Digital Rebel XT camera. EOS Digital Rebel XT Advantages The EOS Digital Rebel XT camera has 8 million effective pixels on its sensor. Several competitive models have about 6 million pixels. How much do those extra pixels matter? Also, there are compact consumer or prosumer cameras that cost between $700 and $1000 and also have 8 million pixels. How do they compare? It is generally understood that if one has more pixels, one can make bigger prints. Having more pixels also means that one can crop a bit from ones original image and still have lots of pixels left for printing. Pixel quantity also matters because several components of image quality are resolution dependent. Aliasing, or jaggies, gives a rough-edged appearance to lines that cut diagonally across the rectilinear grid of square pixels. More pixels reduce the effects of aliasing and improve image quality. Based on these factors, the EOS Digital Rebel XT has a clear advantage compared to any digital SLR with lower resolution. 8-megapixel compact digital cameras use image sensors that are much smaller than the unit in the EOS Digital Rebel XT camera. Most are 8.8 mm by 6.6 mm, compared to the 22.2 mm by 14.8 mm sensor in the XT. Each pixel is therefore much, much smaller in

Entirely new 8.0 million pixel CMOS sensor designed and made by Canon with improved microlenses and 2nd-generation on-chip noise reduction technology New DIGIC II image processor provides enormous speed gains, improved color reproduction, precisely optimized white balance and expanded dynamic range Maximum shooting speed: 3 frames per second with a burst rate up to 14 frames in Large/Fine JPEG, 5 frames in RAW or 4 frames in RAW + Large/Fine JPEG New, high-performance, 3-layer optical low-pass filter, the same quality used in top-of-the-range Canon DSLRs, provides high resolution while minimizing false colors Startup time now approximately 0.2 seconds Shutter release time lag reduced from about 120 milliseconds to 100 milliseconds (compared to Digital Rebel) Viewfinder blackout time reduced from about 225 milliseconds to 170 milliseconds (compared to Digital Rebel) CF card data-writing speed approximately 3.5 times faster than Digital Rebel New RAW + JPEG setting with separate Large/Fine quality JPEG files written, rather than embedded, and saved as separate files on the CF card No dedicated application needed to extract JPEG data

Image Processing

Improved auto white balance performance, especially at higher ISO ratings and in conjunction with flash color data transmission from the built-in flash or the accessory 580EX Speedlite
New white balance correction, same as on EOS 20D, allows fine tuning in Blue-Amber and/or Magenta-Green color ranges, +/- 9 levels New white balance bracketing in Blue-Amber or Magenta-Green direction, +/- 3 steps White balance bracketing can be used in combination with white balance correction Six image processing Parameter Sets provide complete control of sharpness, contrast, saturation, and color tone New monochrome Parameter Set allows Standard B&W, B&W with filter effects or B&W with toning effects Custom Function 2 provides optional dark frame subtraction noise reduction at shutter speeds longer than 1 second Enhanced

Enhanced User Controls

Selectable AF modes: One-Shot, AI Servo or AI Focus Selectable metering patterns: 35-zone Evaluative, Centerweighted Average, and Partial (approx. 9% of viewfinder) Adjustable Flash Exposure Compensation up to +/- 2 stops Nine Custom Functions with 24 settings including mirror lock Three JPEG resolution options: Large, 8 megapixels; Medium, 4.1 megapixels; Small, 2 megapixels Cross keys can now be used to select the AF point directly via Custom Function 1-4 New Quick Menu function gives direct access to frequently used settings via cross keys Shutter speeds now user-settable in 1/3 or 1/2 stop increments Exposure compensation now possible in any auto exposure mode, up to +/- 2 stops, in 1/3 or 1/2 stop increments Fifteen menu interface languages Playback options accessed with the Info button include single image with or without basic info overlay, or with full shooting information Jump display now offers a choice of 10 or 100 images forward or back in single play mode, or jump by the shooting date New, brighter, Precision Matte focusing screen for greater contrast and snap with manual focusing

Software Package

New software package includes Canons Digital Photo Professional Version 1.6 plus EOS Digital Solutions Disk Version 10, featuring ZoomBrowser EX 5.1, ImageBrowser 5.1, CameraWindow 5.1, PhotoRecord 2.2, RAW Image Task 2.0, EOS Capture 1.3, PhotoStitch 3.1, TWAIN and WIA drivers, ArcSoft PhotoStudio 5.5, and a separate CD containing instruction manuals for all included software

III. FEATURE DISCUSSION

New 8 Megapixel Image Sensor

CMOS Sensor

The component of the new Canon EOS Digital Rebel XT camera that will receive the most first-look attention is the all-new, Canon-designed and manufactured, 8.0 effective megapixel, single-plate, CMOS sensor. It has a 2:3 aspect ratio (the same as 35mm film), with 2312 x 3472 effective pixels. The imaging surface is 22.2 mm by 14.8 mm, giving a focal length conversion factor of 1.6x. Each pixel is a generous 6.4 m square.
Several engineering features account for the sensors wide ISO range (100 to 1600), low noise, high dynamic range, and low power consumption. The configuration of each photo diode in each pixel has been optimized; detail processing has been improved, and a greater portion of each pixel is now sensitive to light. The microlens array which gathers light for the sensor has a new design, shared with the microlenses in the EOS-1Ds Mark II, 1D Mark II and 20D that reduces the gaps between the lenses. This narrow-gap array gathers light more efficiently and loses less light between the lenses.
Microlens gap Dichroic Mirror (Reflects Infrared Rays) Infrared-absorbing Glass Null area
Photodiode EOS Digital Rebel XT EOS Digital Rebel/EOS 300D Digital CMOS Sensor
The new, 3-layer optical low-pass filter has the same construction as the EOS 20Ds filter, an infrared absorbing glass and three crystal plates having different optical axes. A dichroic mirror with a dielectric, multi-layer coating on the front surface deflects light over a wide range of infrared wavelengths. There is also an infrared-absorbing glass layer to absorb nearinfrared wavelengths in the visible spectrum. The low-pass filter incorporates two monocrystal plates that separate the subject image into four horizontal and vertical directions. Between these two plates is a phase plate, also monocrystal, which converts the linear polarized light into circular polarized light. The first crystalline plate separates the image into two images

Low-pass Filter (Separates image in vertical direction) Phase Layer (Converts linear polarized light into circular polarized light) Low-pass Filter (Separates image in horizontal direction)
Optical LPF Optical LPF Optical LPF (phase plate) Point light source

Imaging Element

III. DISCUSSION
horizontally. The linear polarized light is converted into circular polarized light by the phase plate. The second crystal plate separates the images vertically, resulting in four duplicate images arranged in a square matrix. The image separation in the horizontal and vertical directions is optimized for the sensor pitch so that false colors and moir caused by minute horizontal and vertical lines in the subject are reduced while resolution is actually increased. Additionally, this hybrid construction, with its deflecting and absorbing layers, reduces image fogging and red ghosting caused by sensor reflections. The CMOS sensor features a second generation, on-chip, noisereduction circuit that includes a new low-noise gain amp and an offset reduction circuit. The signal is amplified in slow-read steps. The result is the effective elimination of random noise and fixed pattern noise. With the EOS Digital Rebel XT camera, one can even photograph the heavens in the night sky with very low noise.
1st-generation on-chip noise-reduction circuit 2nd-generation on-chip noise-reduction circuit
Noise reduction by amplifying the signal in slow-read steps
To minimize the increase in power consumption caused by upgraded components such as the larger sensor and the faster reading of the sensors output, the output amps power consumption is kept to an absolute minimum. As with the EOS 20D, power to the output amp is cut off and circuit-driving standard current is also cut off during long exposures. Less power is used and noise is further reduced. New DIGIC II Image Processor The DIGIC II Image Processor brings a host of significant improvements in speed of operation, control, noise reduction and image quality to the EOS Digital Rebel XT camera. The camera starts up in a near instantaneous 0.2 second. Its shutter release lag time is now only 100 milliseconds and viewfinder blackout time has been reduced to 175 milliseconds. The EOS Digital Rebel XT DIGIC II Image Processor camera can shoot up to 3 frames per second at its full JPEG Large/Fine 8 megapixel resolution. The DIGIC IIs major reduction in buffer clearance times and its huge increase in write speed to the CompactFlash card enable a burst performance of 14 consecutive frames for 8 megapixel JPEG Large/Fine files and 5 consecutive frames for 8 megapixel RAW files. The DIGIC IIs newly-developed algorithm also yields improve color reproduction, especially with high-saturation, bright subjects, improved auto white balance precision for a wide range of scenes and light sources, and wider dynamic range in highlight areas.

To enable manual focusing with the focusing ring, the lens focus mode is switched to M or MF (with Canon EF and EF-S lenses). When focus is achieved, the focus confirmation icon and superimposed display light up. The AF-assist beam is a series of stroboscopic flashes from the builtin flash or a near-IR patterned LED with a compatible accessory Canon Speedlite. With the built-in flash, the working range of the AF-assist beam is approximately 4 meters/13.2 feet at the center and 3.5 meters/11.5 feet a the other 6 AF points. Firing stops when the focus detection confirmation signal is detected.

E-TTL II Autoflash

The EOS Digital Rebel XT camera incorporates the E-TTL II autoflash system used in the EOS-1D Mark II, EOS-1Ds Mark II and EOS 20D. It is truly remarkable that such a sophisticated algorithm has been included in a camera at the XTs price point. E-TTL II takes effect when the built-in flash or an accessory EX-series Speedlite is used. E-TTL II does not assume that the AF point in use covers the main subject. Instead, when the shutter button is pressed completely, ambient light is measured just before a pre-flash fires. For each metering zone, the ambient reading and the pre-flash reading are compared. Areas having a large difference between ambient and pre-flash readings are selected and analyzed. Extreme differences suggest a highl reflective or specular object; these areas are eliminated from calculations, avoiding underexposure. When a lens providing distance information is used, this data is also considered in determining
the presence and location of a high-reflectance object. The selected pre-flash readings are added and averaged and the output of the main flash is calculated. Even if the subject changes position, reflectance or size, the flash metering remains highly accurate and stable. Some other highly useful changes to the flash system of the EOS Digital Rebel camera have occurred: User-adjustable flash exposure compensation up to +/- 2 stops in 1/3 or 1/2 stop increments has been added. Second-curtain flash synch has been added, via Custom Function 9-1. This function is effective with the built-in flash and also with EX-series Speedlites that lack secondcurtain sync control. The built-in flash has greater coverage, now handling a 17mm focal length, and the flash head has been raised 5.5mm higher than the Digital Rebel, reducing red-eye and eliminating blockage of flash illumination when using the EF-S 18-55mm and EF-S 17-85mm zoom lenses. The built-in flash has a guide number of 13/43 (ISO 100, meters/feet), the highest in its class as of February, 2005. The XT supports the new functions of Speedlite 580EX, including auto zoom for picture size and color temperature data transmission. Flash exposure bracketing, FEB, is now effective when set with the 580EX, 550EX, MR-14EX or MT-24EX Speedlites. Modeling flash is enabled with the 580EX, 550EX, 420EX, MR-14EX and MT-24EX Speedlites. In the Creative Zone modes, press the depth-of-field preview to fire at 70 Hz for 1 second. The EOS Digital Rebel XT camera supports wireless flash with the 5 flashes listed above and the ST-E2. Three-group slave control, a flash output ratio control, FEB and modeling flash (with flash output ratio) are all enabled. (The ST-E2 supports up to two slave groups with flash output ratio control, but not FEB or modeling flash.) Note that the 420EX can function as a slave only, while the MR-14EX and the MT-24EX can serve as the master unit only.

Controls

Along with its new 8-megapixel sensor, one of the biggest differences between the EOS Digital Rebel XT camera and its predecessor, the EOS Digital Rebel camera, is its system of controls and preferences. Of course, the camera can be operated in a fully automatic mode so that it can be use by inexperienced Manual exposure Aperture-priority AE photographers. After brief experience with the Auto Depth-of-Field AE Shutter-priority AE exceptional quality of the images the XT camera Program AE produces, there is every expectation that the vast Full Auto majority of XT camera users will explore, and inevitably find indispensable, the many ways in Portrait Flash Off which the camera can be made to do exactly what Landscape Night portrait the user wishes. It is a delight to use such a tool. Close-up

Sports

Processing Parameters The Digital Rebel XT camera has the same range of image processing parameters as the EOS 20D: Parameter Set 1 (contrast, sharpness and color saturation set to +1) is optimized for vivid, sharp images upon which no retouching will be performed before direct printing. Parameter Set 2 (contrast, sharpness, color saturation and color tone set to 0, i.e., mid-scale), is optimized for images that will be retouched or adjusted. Parameter Sets 3, 4 and 5 can be customized by the user for contrast, sharpness, color saturation and color tone. There is also a monochrome Parameter Set that makes black and white photography easy and great fun. This set incorporates five levels each of contrast and sharpness in addition to filter effects (none, yellow, orange, red and green) that are just like camera filter effects and toning effects (none, sepia, blue, purple, green) that use digital processing to produce prints that look like vintage photochemical artifacts In the Basic Zone modes, Parameter Set 1 is set automatically. In the Creative Zone modes, all six Parameter Sets are available.

Monochrome

Monochrome (R Filter)
Custom Functions The EOS Digital Rebel XT camera adds nine of the EOS 20Ds eighteen custom functions to its arsenal of controls. C. Fn. 1 changes the functions of the SET button and the cross keys and provides for quick and easy access to frequently used functions. The five choices are: 0, Normal; 1, SET button controls image recording quality; 2, SET controls processing parameters; 3, SET controls image playback; 4, cross keys control AF point selection. C. Fn. 2 enables the dark noise subtraction noise reduction function for long exposures. It provides clearer images of night scenes or the night sky but doubles image processing time between exposures. C. Fn. 3 sets the flash sync speed in aperture priority auto mode to a fixed 1/200 second or leaves the sync speed on auto/slow sync. C. Fn. 4 determines selectable functions for the shutter and AE lock buttons. The four choices are: 0, AF/AE lock; 1, AE lock/AF; 2, AF/AF lock, no AE lock and 3, AE/AF, no AE lock.

C. Fn. 5 controls the AF-assist beam. The three choices are ON, OFF and fire only the external flash. C. Fn. 6 controls whether manually-adjusted exposure level increments are in 1/2 or 1/3 stop units. C. Fn. 7 enables the mirror lockup function. When C. Fn. 7-1 i selected, the mirror locks up when the shutter button is pressed completely. The shot is taken when the shutter button is released and then pressed completely again. The maximum mirror lockup duration is 30 seconds, after which the mirror returns. C. Fn. 8 controls whether the E-TTL II autoflash system operates in its evaluative mode or its averaging mode. Finally, C. Fn. 9 determines whether the built-in flash or an accessory Canon EX-series Speedlite is synchronized to fire after the first shutter curtain completes its travel or just before the second shutter curtain begins to move. Menus The Digital Rebel XT camera has ten new menu items compared to the EOS Digital Rebel camera, so a fifth menu column has been added to accommodate this new abundance of choices. Menus one and two are for image recording functions and are color-coded red. In menu one, the user chooses recording quality, red-eye reduction, warning beep, AF mode, metering mode and ISO speed. In the Creative Zone modes, menu two is displayed. It contains auto exposure bracketing, flash exposure compensation, white balance, white balance shift/bracket, custom white balance, color space and parameters. Menu three is color-coded blue and has 5 playback items: image protect, image rotate, print order, auto play and review time control. Menus four and five are for camera setup functions. They are colorcoded yellow, with 7 items in each. Setup one has auto power off timecontrol, auto rotate, LCD brightness setting in 5 levels, date/time, file numbering, format and shoot without card. Setup two has a choice of 15 different menu languages, a choice of video systems for playback through a connected TV monitor, data communication preferences (Normal or PTP), custom functions, a clear settings command, a sensor cleaning setting tha locks up the mirror and opens the shutter, and a firmware version readout. For quicker access to key camera settings, the EOS Digital Rebel XT also features a new "Quick Menu" function. When the camera is set for picture taking, the cross keys on the back provide instant access to AF mode, metering mode, white balance settings, and ISO speed. All in all, the menu settings enable Digital Rebel XT users to modify the cameras performance according to their diverse applications and needs.

Image Display In playback mode, a timely revision of the Jump function enables the user to move quickly to a particular image or group of images, no matter how far one needs to go. Carried forward is the ability to jump 10 frames. New are both the ability to jump 100 frames and the ability to jump to the first image of another days shooting. With the jump screen, use the top and bottom cross keys to select the jump method, and then use the left and right keys to jump. Because the Digital Rebel XT camera can take advantage of CompactFlash cards larger than 2 GB, the new Jump function promises to be a real time-saver. The XT has three different image display formats and controls to determine when or whether such displays should occur. In a sequence shared with the EOS 20D, each time the user presses the Info button during single image playback, the display mode will change as follows: single image with basic information, shooting information (the color space, WB correction and B/W indicator have been added) with reduced image size, and single image without information (another improvement over the EOS Digital Rebel camera). Press the left or right cross key to view the previous or the next image. In the nine image index format, pressing the Info button switches between normal (nine images plus basic information) and nine images without information. In the magnified zoom viewing format, pressing the Info button during image display switches between normal (magnified image with basic information) and magnified image without information.
1. Single Image (with basic information) 2. Shooting Information 2. Shooting information 1. Single image (with basic information)
3. Single Image (no shooting Information) 3. Single image (no shooting information)

Camera Camera Settings

settings
Image review time right after capture is menu settable to off, 2 seconds, 4 seconds, 8 seconds, or Hold. Pressing the Info button during image review switches the Info display on or off. Further choices are Auto play and Auto play right after shooting. Displayed images can be rotated manually or automatically. Manually, the Playback menu Rotate option enables clockwise rotation of 90, 270 and 0. Auto image rotation is settable with the Setup 1 menu's second item. Image rotation is applied during playback and video OUT, not during image review after image capture. The EOS Digital Rebel XT cameras LCD monitor has received some attention as well. It is the same unit used on the EOS Digital Rebel camera except that a slight difference between the brightness of the image displayed and its actual brightness as viewed on a correctly adjusted personal computer has been resolved by changing the LCD monitors gamma curve. Setup menu 1, item 3, provides a gray scale to assist in selecting one of five levels of LCD brightness.

Exposure Controls The EOS Digital Rebel XT camera offers a broad and flexible range of exposure controls. In the Basic Zone modes, evaluative metering, linked to all 7 AF points, is automatically selected. In the Creative Zone modes, partial metering at the center (9% of the viewfinder) and centerweighted average metering are also available. Pressing the left cross key displays the Metering Mode menu.

Viewfinder

Eight exposure modes offer a total of 14 different options: Program AE (shiftable), Shutter-priority AE, Aperturepriority AE, Auto Depth-of-Field AE (A-DEP, non-shiftable), Full Auto (Program AE, non-shiftable), six Programmed Image Control modes (Portrait, Landscape, Close-Up, Sports, Night Portrait, Flash OFF), Manual exposure (including Bulb), and E-TTL II autoflash program (C. Fn. 8-0: Evaluative metering, C. Fn. 8-1: Averaged metering). The range of available ISOs is from 100 to 1600. In the Basic Zone modes, the ISO cannot be set manually, whereas in the Creative Zone modes, the ISO cannot be set automatically. Pressing the top cross key displays the ISO speed menu. Manual exposure compensation is enabled in each of the Creative Zones except Manual. Bracketing can extend to +/- 2 stops in 1/2 or 1/3 stop increments. Depending on the shooting mode, either shutter speed, aperture, or both can be varied. Auto exposure bracketing, AEB, is available in the Creative Zone modes and is set with the on-screen menu. The bracketing sequence is, first, the standard exposure, then decreased exposure and, last, increased exposure. The range is the same as with manual bracketing. Conveniently, auto exposure bracketing can be used in combination with white balance bracketing, in which case nine images are generated. Both auto and manual AE lock are available in Creative Zone AE modes. In the One-Shot AF mode with evaluative metering, AE lock takes effect when focus is achieved. During evaluative metering, AE lock centers on the selected AF point. During partial metering at the center, or with centerweighted averaged metering, AE lock fixes on the center AF point. Normally, manual AE lock is enabled with the AE lock button. Pressing the button again renews the AE lock in the event of subject or camera movement. When the built-in flash or an EX-series Speedlite is used, the AE lock button works as an FE lock button.

Flash Circuit Board Motor Drive Board External Interface Connection Circuit Board SDR SDRAM

Main board (top)

Main board (bottom)

10mm SDR SDRAM

DIGIC II Image Processor
Interfaces and Compatibility
Three interface terminals are provided on the side of the body. The EOS Digital Rebel XT camera has a USB 2.0 Hi-Speed, mini-B connector that transfers data from the camera to a computer approximately ten times faster than the USB 1.1 connector on the EOS Digital Rebel camera. Video output is provided for both NTSC and PAL, and provision is made for the RS-60E3 Remote Switch.

USB Terminal

It is possible to operate the XT wirelessly via either the RC-1 or RC-5 Remote Controller. The cameras grip has a built-in wireless remote control receiver. The system is compatible with all shooting modes and has a range of about 5 meters/16.4 feet, front and center. To enable this function, press the Drive Mode button to display the Self-timer/Wireless remote control icon on the top LCD information panel.

RS-60E3

The XT complies with Design rule for Camera File System 2.0 and Exif 2.21, updated to support the expanded Adobe RGB color space often used for printed materials. When software compatible with Exif 2.21 is used, images captured with the XT and tagged as Adobe RGB will open automatically in the Adobe RGB color space. Also, when a printer that complies with Exif 2.21 is used, the printer will adjust color saturation for improved results.

Camera Direct Printing

As with the EOS Digital Rebel camera, the EOS Digital Rebel XT camera is currently compatible with PictBridge, CP Direct and Bubble Jet Direct printers. By operating the camera without the involvement of a computer or specialized software, all three of these systems print JPEG images that comply with DCF. DPOF print ordering for direct printing is also possible, as is batch printing of specified images. The basic specifications for these three printing methods are the same as with the EOS 20D. Also shared with the EOS 20D is the XTs compatibility with highspeed printing when the camera is connected to a BubbleJet printer via PictBridge. To promote direct printing, the XTs default Communications menu setting is Print/PTP. PC connection is the alternative. The EOS Digital Rebel XT camera also has the same Direct Print or Easy Printing feature found in the latest PowerShot cameras. (Unlike the PowerShot cameras, the XT does not have a feature to transfer images directly to a personal computer.) When the XT is connected to

III. DISCUSSION 23

a printer compatible with direct printing, select playback and choose the image to be printed; confirm the print setting and press the Direct Print button while its blue LED is lit.

Software

The software bundled with EOS Digital cameras in 2004 was composed of products centered on the EOS Viewer Utility. With the EOS Digital Rebel XT camera, the role of EVU will be taken over by a new software configuration centered on the ZoomBrowser EX / ImageBrowser applications supplied with the camera. Canon will also supply Digital Photo Professional software with the XT for professional and high-end amateur photographers who prefer to use RAW images. The EOS Digital Rebel XT camera will be supplied with three CDs, all Windows/Mac hybrids, the EOS Digital Solution Disk, v. 10, the Digital Photo Professional v. 1.6 CD and the Software Instruction Manual CD. The following can be found on the EOS Digital Solution Disk: ZoomBrowser EX v. 5.1 (Windows)/ImageBrowser v. 5.1 (Mac) is the main viewing/ editing software for the XT. Its task button and wizard-type interface is aimed primarily at a range of users from novices who shoot mostly JPEGs to advanced amateurs. It facilitates functions such as image downloading, specifying camera settings, remote shooting, image printing, multiple image viewing modes, RAW image processing for virtually all EOS Digital cameras, and image merging by starting or linking to the respective applications from ZoomBrowser EX/ImageBrowser. CameraWindow, v. 5.1 (Windows/Mac), controls communication between the camera and the computer. At default settings established when the software is installed, the Camera Window is automatically displayed when the camera is connected to the computer and allows the user to transfer images saved on a memory card in the camera to ZoomBrowser EX or ImageBrowser and to specify settings on the camera. PhotoRecord v. 2.2 (Windows) also uses a task button and wizard-type interface. It links to ZoomBrowser EX to provide advanced yet easy-to-use image layout, image size adjustment, frame selection, text caption entry and other printing functions. RAW Image Task v. 2.0 (Windows/Mac) works within ZoomBrowser EX and ImageBrowser. It allows users to display and process RAW images and to restore the processing parameters used on the camera. Its algorithms are well matched to Canon cameras, providing image processing with the same color tones as the camera itself. It also features functions for converting and saving RAW images as TIFF or JPEG and for adding ICC profiles. It is compatible with color management systems.
EOS Capture v. 1.3 (Windows/Mac) is a remote shooting software application. It allows the camera to be controlled and camera settings to be specified from the computer and saves shot images to the computer. It also allows the user to take shots by pressing the shutter button. It is identical to version 1.2 apart from the addition of the EOS Digital Rebel XT camera to the list of supported cameras. PhotoStitch v. 3.1 (Windows/Mac) uses a simple procedure to merge multiple JPEG images to create composite images such as panorama shots. ArcSoft PhotoStudio v. 5.5 (Windows/Mac) is also supplied on EOS Digital Solution Disk v. 10. It provides powerful image editing capabilities with a sophisticated yet easy-touse interface. Also included are WIA drivers for Windows XP and Me and TWAIN drivers for Windows 2000 and 98SE. Digital Photo Professional v. 1.6 (Windows/Mac) is supplied on a separate CD. DPP 1.6 is a powerful RAW workflow and image editing application program aimed primarily at professional and high-end amateur photographers who shoot RAW images. It uses Canons own algorithms to provide fast RAW image display and processing and offers a range of real time image adjustment functions.

IV. CONCLUSION

When the original EOS Digital Rebel camera was introduced, it was the first interchangeable-lens digital SLR to break the $1,000 price barrier. The approximate retail price was $899* for the body and $999* for the kit with the EF-S 18-55 mm lens. It had 6.3 megapixels, superb, low-noise images, long battery life, and it looked cool. There was nothing even remotely like it. No wonder Canon sold them by the ton and defined the under-$1,000 DSLR category in the process. The EOS Digital Rebel camera will remain in the Canon lineup at a reduced price. It will, undoubtedly, win new converts and create a whole new category once again. (* Actual selling prices are set by dealers and may vary.) Now the EOS Digital Rebel XT camera arrives. It is smaller and lighter, svelte, actually. It has even higher resolution and image quality, and a complete set of user controls. Combined with its extra-fast startup time, quick shutter release, short finder blackout time and excellent burst performance, Canon is defining the under-$1,000 DSLR category once again. Canon has discovered the power of a unique selling proposition: Make products that exceed the performance and value of everything else in their categories. That was the case with the original EOS Digital Rebel camera. It was certainly the case with the EOS1D Mark II, EOS-1Ds Mark II and EOS 20D cameras. It will surely be the case once again with the EOS Digital Rebel XT camera.

WHITE PAPER

THE CANON EOS DIGITAL REBEL XTi CAMERA: MORE REGAL THAN REBEL: THE FINEST PERFORMANCE AND THE BEST VALUE IN THE UNDER $1000 CATEGORY

Table of Contents

I OVERVIEW II NEW AND IMPROVED FEATURES III FEATURE DISCUSSION Newly Developed 10.1 MP Sensor Comprehensive Dust Reduction System New 9-point AF System New 2.5-in. TFT LCD Screen Display-off Sensor New User Interface Basic Operation Concept New Info Display Items Viewfinder SET Button, Cross-Keys, DISP. Improvements to Playback Menus Picture Style Custom Functions Camera Direct Printing Direct Image Transfer Design and Construction Interface Drive and Power Source Folders Accessories and System Compatibility Software IV SPECIFICATIONS V CONCLUSION
Contents 2006 by Canon U.S.A., Inc. All Rights Reserved. Excerpts from this material may be quoted in published product reviews and articles. For further information, please contact Canon U.S.A., Inc. Public Relations Dept., (516) 328-5000.

I. OVERVIEW

The Canon EOS Digital Rebel XTi is the best entry-level digital single lens reflex (DSLR) camera on the market today. Compared with its competitors at the sub-$1000 price point, lens included, the XTi produces the finest images with the purest colors and the lowest noise, and has the most comprehensive solution to the problem of dust on the sensor. It also has the clearest and most elegant user interface, the fastest and most precise autofocus, and the most powerful and useful software package. The original Canon EOS Digital Rebel, introduced in September, 2003, was the first interchangeable lens DSLR marketed for less than $1000 including a lens, the EF-S 18-55 mm zoom. Purchasers were delighted to find the camera small, light and easy to handle. Its image quality was remarkable thanks to its high-quality Canon CMOS sensor, producing lower noise levels than more expensive rival products offered. The original Digital Rebel enjoyed immense success in the marketplace, selling more than 1.2 million units worldwide in less than 18 months. In March, 2005, Canon introduced the second generation Digital Rebel XT with an 8.0 megapixel CMOS sensor vs. the 6.3 MP CMOS sensor of the Digital Rebel. The new camera was 3 ounces lighter and a half inch smaller than the original. A newly-developed DIGIC II image processor made the XT much faster, yet more frugal with battery power. E-TTL II flash control , nine Custom Functions, White Balance Bracketing, long-exposure noise reduction, a monochrome mode and a host of other changes gave XT users tremendous control over the photographic process. It was amazing that Canon could sell this camera for less than $1000, lens included. Once again, Canon had a wildly successful DSLR. The new Canon EOS Digital Rebel XTi builds on this inheritance. It uses a new, highly evolved 10.1 megapixel CMOS sensor that is designed and manufactured entirely by Canon using equipment which was also designed and manufactured by Canon. In this and many other respects, Canon is unique in the world of photography. Canons world-leading R&D division (second or third globally each year for 14 consecutive years in the number of U.S. patents granted) sees to it that every Canon DSLR has the highest image quality and the lowest noise in its category.
Canon designs, develops and manufactures its own EF lenses, its own CMOS image sensors, and its own DIGIC image processors, with proprietary technologies that it doesnt sell to anyone else. Canons original EOS Integrated Cleaning System gives the Digital Rebel XTi a comprehensive dust cleaning and management system offered by no other camera at any price. The Digital Rebel XTi has a 9-point, high-precision autofocus unit that it shares with the EOS 30D. The central sensor of the AF unit enhances precision with f/2.8 or faster lenses, a professional feature exclusive to the XTi in its category. The XTi has a new, large, bright, sharp, easy to read 2.5-inch color display and a new user interface that make the camera a delight to use. Picture Style, an improved Direct Print function, Print/Share, and a host of other improvements make the Digital Rebel XTi the highest performing member yet of the Digital Rebel family. The XTi builds on the successes of its predecessors, each of which was a superstar in its own right. With the Digital Rebel XTi, Canon goes from strength to strength, adding and refining features to make the XTi the finest camera today in the under-$1000 category.

Shooting is possible immediately after startup
During manual cleaning with the reflex mirror locked up, the LCD screen will indicate that sensor cleaning is in progress. When the battery level is low, the following warnings are given: First, the beeper will sound even if [Beep] is set to [Off]. Second, a warning message is displayed on the LCD screen until the prohibited voltage is reached. Because the self-cleaning system requires exceptionally low power, the number of possible shots from a charged battery is not reduced measurably. To prevent the piezoelectric element from overheating, the self-cleaning unit cannot operate for 3 sec. after any
Self Cleaning Sensor Unit
operation. Also, if the self-cleaning unit is operated 5 consecutive times within 10 sec., it will not work for 10 sec. afterward. Turning the power off does not reset this. The restriction does reset if the cleaning function is not activated for at least 60 seconds. While the self-cleaning unit is disabled, if you select [Sensor cleaning: Auto] from the menu, the [Clean now] option will be grayed out and cannot be selected. Two kinds of dust are less likely to be moved by the accelerations of the vibrating LPF: small and light particles and the dreaded sticky stuff. In the event that the Self Cleaning Sensor Unit cannot remove all the dust, the Dust Delete Data (the size and position of dust too small or too sticky to remove with the Self Cleaning Sensor Unit) is obtained and appended to the image so that Digital Photo Professional Ver. 2.2 can erase the remaining dust spots on the image automatically. The shadows created by the dust particles adhering to low-pass filter #1 are detected by the imaging sensor. The most troubling dust particles, mostly the larger ones, are then sin3 gled out and their location coordinates are obtained as Dust Delete Data. This data is attached to the image. After the shutter is released, it takes about 6 sec. to obtain the Dust Delete Data.
Self-cleaning sensor system operates.

Picture is taken.

Steps to obtain dust delete data
To obtain Dust Delete Data, begin by taking a picture of a solid white, patternless object (such as a piece of white paper) which is quite out of focus despite the use of a small aperture. Use a 50mm or longer lens with manual focus set to infinity. The object should be about 1 foot from the camera. Any common light source is fine. Fill the viewfinder frame. (The image data can be obtained even without a CF card installed in the camera.) When the screen in step 4 appears, the camera will be set automatically as follows: shooting mode, aperture-priority AE; aperture, f/22; shutter speed, 1/2 sec. or faster; ISO Speed, 800***; flash, off; drive mode, single. Even if the focus mode is set to <AF>, manual focus will still take effect, and even if a CF card is installed in the camera, the image taken for the dust deletion will not be recorded. If the picture was overexposed or underexposed by 2 stops or more or if the lighting of the white paper was very uneven, the Dust Delete Data cannot be obtained properly and a message telling you to try again will appear on the screen. The Dust Delete Data obtained is subjoined to both the JPEG and RAW images regardless of the shooting mode. The data is only a few kilobytes, so it will not affect the continuous shooting speed or maximum burst. It is attached to all subsequent images until it is updated again (via the procedure described here). It is recommended that the Dust Delete Data be updated before a big shoot or after changing lenses in a dusty place.

If you use the Dust Delete Data feature and do not want to change the data of the dust coordinates, you can disable the default self-cleaning operation so it does not operate when the power is turned on or off. If you want to stop the Dust Delete Data from being appended to the images, the Dust Delete Data must be erased with the [Clear all camera settings] menu item. DPP Ver. 2.1 had the copy stamp tool for manually selecting and erasing round dust spots. This feature has been improved with the DPP Ver. 2.2 which can use the Dust Delete Data to erase the dust spots automatically. When an image contains Dust Delete Data, the automatic dust spot erasing process activates by starting the copy stamp tool and pressing the [Apply Dust Delete Data] button. With DPP Ver. 2.2, the dust spots at the locations specified by the Dust Delete Data are detected and erased if doing so is deemed effective. This modest bit of artificial intelligence will be appreciated by anyone who has done a little spotting or retouching because certain things (and its often difficult to figure out just which ones) look worse after theyve been repaired and are better off left alone.
Digital Photo Professional Ver 2.2
New High-Precision 9-Point AF System
The Digital Rebel XTi has the same 9-point AF sensor and AF unit as the EOS 30D, including the sophisticated dualprecision cross-type sensor in the center AF position. This represents a very substantial upgrade from the Digital Rebel XT. The XTi is the first entry-level EOS Digital camera to have an enhanced precision cross-type, center AF point compatible with f/2.8, a feature unique in its class. The XTi has some significant AF performance improvements over the Digital Rebel XT. For example, the XTi has the same wide-area focusing as the EOS 30D. With an f/2.8 or brighter lens, the center AF point detects focus with the f/2.8 light flux. The base line of the center AF point's vertical-line sensitive sensor is twice as long as that of an AF point compatible with f/5.6. This makes focusing detection more precise.

1.7 3.6 6.0

Additionally, the center AF point has a vertical-line sensitive sensor compatible with f/5.6. Therefore, cross-type focusing is possible with any EF lens. The center AF point's horizontal-line sensitive sensor for f/5.6 has a two-line, zigzag pattern. This redundancy of focusing methods makes focus detection more consistent. As in the case of the EOS 30D, fine-tuning has been incorporated to improve the AF precision. Focusing performance under low light has been improved by 1 stop and is now possible from EV -0.5 to

EV 18. Finally, the wider focusing area with nine AF points and the diagonal configuration of AF points in and around the center afford improved subject focus tracking. Focusing speed is on a par with that of the EOS 30D because the Digital Rebel XTi shares its high-speed 32-bit RISC microcomputer. The algorithm for AI SERVO AF continuous shooting has been fine-tuned and optimized for 3 frames per second. In the Creative Zone modes, the following AF modes can be selected with the AF mode selection screen: One-Shot AF (when focus is achieved, AF operation stops and locks), Predictive AI SERVO AF (tracks subject movement and focuses continuously until the start of exposure) and AI Focus AF (automatic switching between One-Shot and Predictive AI Servo AF). In the Basic Zone modes, the optimum AF mode is selected automatically, a convenience for the less technically inclined, certainly a part of the XTis demographic. In the Sports, Flash Off, and Basic Zone's Full Auto modes, the beeper sounds softly (when the beeper is enabled) when focus is achieved with AI SERVO AF. In the Creative Zone modes with AI SERVO AF, the beeper does not sound when focus is achieved. The AF mode can be set even while the lens focus mode switch is set to MF. (When focus is achieved, the focus confirmation icon and superimposed display lights up.) However, "MF" will be displayed on the LCD screen when it displays the camera settings The predictive AF calculation speed is the same as that of the Digital Rebel XT. With an EF300mm f/2.8L IS USM lens, the camera can focus-track a moving subject approaching at 31 mph/50 kph up to about 32.8 feet/10 meters away. As with the EOS 30D, the lens drive keeps still when focusing a still subject with AI SERVO AF. If the subject begins to move, the camera can start to focus-track the subject immediately because focus detection is conducted continuously. As in the case of the EOS 30D, if you press the shutter button completely in one quick stroke (rather than pressing halfway first), the lens will focus, if possible, before the picture is taken. If focusing is not possible, the picture will be taken anyway to give priority to taking the picture. This extreme instance of shooting priority is especially useful should something occur that is so remarkable that even less than perfect focus will not spoil the record of the moment. Because the Digital Rebel XTi uses the same AF point selection algorithm as the EOS 30D, there is a high probability that the correct AF point will be selected automatically. The selection procedure is the same as with the Digital Rebel XT. With the Digital Rebel XTi, you can select the AF point manually on the LCD screen's large and easyto-read display. As with the Digital Rebel XT, the XTis AF-assist beam is a series of stroboscopic flashes. It is not emitted in the Landscape, Sports or Flash OFF modes. In a Creative Zone mode, it fires automatically when the built-in flash has been popped up manually. Firing can be enabled/disabled with C.Fn-5. Emission time is 250 ms or less. The working range is approximately 13.1 feet/4 meters at the center and approximately 11.5 feet/3.5

in lenses such as the EF 400mm f/2.8L IS USM or the EF 600mm f/4L IS USM. All over the world, photographers depend on Canon IS to help them achieve the highest possible image quality. At some point, in-body stabilization may improve to the point at which such technology may be appropriate for certain segments of Canons DSLR range. It would be senseless to rule out such a possibility. Even now, differences in unit cost are not enough to be significant factors in such a decision. The bottom line is performance.
New, Highly-Legible 2.5-inch TFT LCD Color Screen
A 2.5-in., 230,000-pixel, color TFT LCD screen with a wide, 160 viewing angle is a welcome new feature of the Digital Rebel XTi. Compared to the Digital Rebel XT's 1.8-in. LCD screen, the display area is about twice as large. Also, to improve the

Horizontal viewing angle

Vertical viewing angle
Digital Rebel XTi Digital Rebel XT
menu's readability, the font size has been greatly increased. The LCD screen illumination is provided by three LED backlight modules and the brightness adjustment range has been expanded by one level at both the minimum and maximum levels to a total of 7 steps. During brightness adjustment, a handy and elegant grey scale is displayed along with the image. Thanks to a highly transparent LCD screen and a brilliant LED module, screen brightness is about 40% higher than the maximum brightness of the screens found on the EOS-1D Mark II N, EOS 5D, and 30D. This makes it easier to review images even in bright outdoor conditions. At the darkest setting, the display is not uncomfortably bright, even in a dark place. The maximum brightness setting changes the gamma characteristic of the display to increase the midtones, making the image look somewhat overexposed, and highlight detail tends to be lost. Therefore, it is important that when checking an image's exposure and colors, the brightness level be set to one of the middle five levels. Because the Digital Rebel XTi displays the camera settings at all times, users are recommended to set the screen brightness to a suitable level which would not be too bright in the dark.

2.5" LCD Screen

New Display-off sensor
When you put your eye on the eyepiece, a new display-off sensor (located below the eyepiece) senses your face and turns off the LCD screen automatically. This is to save battery power and prevent the screen's brightness from disturbing your eye while looking through the viewfinder. The display-off sensor consists of an IRED emitter and lightreceiving sensor. When the IRED light reflecting off the face is detected by the lightreceiving sensor, the LCD screen turns off automatically. This display-off sensor can be

disabled by setting the [LCD auto off] menu item to [Disable]. The camera setting display can also be turned off and on manually with the <DISP> button (formerly INFO). If the camera setting display is disabled, it might be difficult to discern whether the camera is turned on or not. A power lamp on the top of the camera is therefore provided to indicate that it is on. Other than a face, any object that comes near the disLight-receiving sensor play-off sensor will turn off the camera setting display temporarily. The camera settings will be displayed again IRED when the face or object goes away from the camera. Also note that if you are wearing sunglasses, they could disperse the IRED light and the display-off sensor might not be able to detect your face. Additionally, if a fluorescent light inverter is within 1 foot/30 cm of the display-off sensor, a pulse may cause the LCD screen to turn off automatically. If auto power off is disabled and the camera is left on, the LCD screen will automatically turn off after 30 minutes. (Power will not be turned off.) Normally, the camera settings are displayed whenever the camera is turned on, but to save battery power, you can have the LCD screen remain OFF even after you turn on the camera's power switch. To do this, set C.Fn-11 [LCD display when power ON] to [Retain power OFF status]. This setting enables the camera to start up with the same LCD screen status (ON/OFF) as when the power was turned off.

New User Interface

Basic operation concept The new user interface of the Canon Digital Rebel XTi takes advantage of the state-ofthe-art, large, bright and sharp LCD screen to offer a faster, easier and more precise way to operate the camera. The basic operation procedure of using the main dial, cross keys, and various buttons to select and set functions is the same as with the Digital Rebel XT. One difference is the XTis ability to switch the screen display easily among the camera settings, menu screen and image playback. This is because camera settings are now displayed, one might almost say magnified, on the LCD screen instead of on a separate LCD panel. Other than when the menu screen or image playback is on view, the camera settings are shown at all times unless the display is turned off. While the menu screen or image playback is displayed, pressing the shutter button halfway will bring back the camera settings. With previous cameras, pressing the shutter button halfway turned off the LCD screen.

cross keys are assigned with functions to set the ISO speed, AF mode, white balance, and metering mode. The procedures to set the ISO speed, AF mode, white balance, and metering mode are the same as with the Canon EOS 30D. Settings take effect from the moment they are selected. You no longer need to press the SET button to register the setting. Although the default setting for the SET button gives direct access to Picture Style, C.Fn.01 can task the button with control of Quality (JPEG quality, RAW, or a combination of the two), Flash exposure compensation (when using external flash, its flash exposure compensation overrides the cameras), Playback (switch instantly to Playback mode) or Cross keys: AF frame selection (cross keys change AF point directly).
The name of the Info button has been changed to DISP. because it now turns the display on and off. Its location is meant to make it easy to turn off the display to save energy. Improvements to playback In four playback-related improvements, the Digital Rebel XTi can now display a magnified or reduced view during quick review (C.Fn.10-1, magnified view on image review and playback); automatic image rotation for images taken in vertical orientation may be selected; a highly useful RGB histogram display is now provided, and CF card remaining capacity has been added to the playback info screen. Menus As in the case of the Digital Rebel XT, the tabbed menu screens are operated with the cross keys and SET button. Menu operation is possible even during the image writing to the CF card after continuous shooting. Note that functions already assigned to cross keys (ISO speed, etc.) are not included in the menus. In all, there are 2 shooting menus, a playback menu and 2 set-up menus. The new items are Picture Style and Dust Delete Data added to Shooting 2, Transfer order added to Playback, LCD auto off added to Set-up 1, and Sensor cleaning: auto and Sensor cleaning: manual added to Set-up 2. Changed items are the Histogram in Playback (RGB added), Auto power off, Auto rotate, LCD brightness and File numbering in Set-up 1, and 2 Custom Functions added to Set-up 2. Any of the following 15 languages can be selected for the LCD screen language: English, German, French, Dutch, Danish, Finnish, Italian, Norwegian, Swedish, Spanish, Simplified Chinese, Japanese, Traditional Chinese, Korean and Russian.

without Red-eye reduction

with Red-eye reduction

without face brightner

with face brightner

PIXMA 6700D and Digital Rebel XTi
In the Digital Rebel XTi, when one uses a printer compatible with this feature, the USB cable can now be disconnected when the image transfer to the printer is completed, even if printing continues. Previously, early cable removal caused the printer to cancel the job. The Print/Share buttons blue lamp blinks during image transfer. When the transfer is completed, the blinking stops and the USB cable can be disconnected. This change is a convenience when one is printing multiple images or if the print size is large. For Print Order (DPOF) and Direct Image Transfer, the specifications are the same as with the EOS 30D. With the Digital Rebel XT, it was necessary to use the Communication menu when switching between direct printing and connection to a personal computer. With the Digital Rebel XTi, the PTP protocol is now the same for both, making it unnecessary to switch. The menu therefore no longer has the Communication setting.

Direct Image Transfer

As with the EOS 30D, images shot with the Digital Rebel XTi can be transferred directly to a Mac or Windows computer just by connecting the camera to a PC using interface cable IFC-400PCU (included), selecting [EOS Utility] in the dialog that appears, and beginning the transfer by pressing the SET button or the Print/Share button. The choices are: 1. All images-- All images stored in a CF card are transferred to the PC. 2. All images not yet transferred-- Only images that haven't been transferred to the PC are automatically selected for transfer. 3. Images marked for transfer-- Images designated in the menu's [Transfer order] item are transferred to the PC. In [Transfer order], you can choose either [Order] for individual images or [All] for all images. Procedures for marking images for transfer are the same as for marking individual images for DPOF. Up to 998*** images can be marked.
4. Select image and transfer-- Select images and transfer them to the PC. 5. Wallpaper for computer-- Select an image to use as the background (wallpaper) for the computer screen and transfer it to the PC. A JPEG file is automatically converted into a BMP file to be transferred and appears as the background (wallpaper) for the computer screen. RAW images cannot be transferred for this purpose.

Item Optics Mechanical parts Electrical parts Circuit boards Lead wires Total (Official) Screws and washers Total

XTi 163 1508

XT 135 1319
The shutter unit is counted as 1 part. The E-ring is counted as a washer. The official total excludes the screws and washers.
The XTis weight is still very modest although it has increased by 25 grams to 510g/18 oz., excluding battery pack, CF card and body cap, but including the backup battery and the eyecup. While based on the Digital Rebel XTs electrical components, the XTis electrical components are compatible with several significant new features, such as the 10.10megapixel CMOS sensor, Self Cleaning Sensor Unit, Display-off sensor, and the 2.5in. LCD screen. As with the XT, the XTi's main circuit board is a highly-integrated 8layer board fitted with the digital control circuit, camera control circuit, image-signal processing circuit, and DC/DC converter circuit. In addition, there are five hard boards, and sixteen flexible boards.

SDR SDRAM

Flash Circuit Board
Self Sensor Cleaning Unit Circuit Board

DIGIC II Image Processor

Main board (top) Main board (bottom)
External Interface Connection Circuit Board

Motor Drive Board

Interface
The USB 2.0 Hi-Speed, mini B port enables high-speed image transfers from the camera to a personal computer (see Direct Image Transfer) using Interface Cable IFC-400PCU (included). Also, the PTP protocol is now used for both Camera Direct printing and transmissions to a personal computer, making it unnecessary to switch the communications setting. An NTSC/PAL video output terminal is provided; it uses Video Cable VC-100 (included). The remote control terminal is compatible with Remote Switch RS-60E3 (2.5 mm dia. mini jack, optional***). Wireless remote control is compatible with Remote Controllers RC-1 and RC-5 (optional). The wireless remote control receiver is built inside the camera grip. The system is compatible with all shooting modes and works within approx. 5 m/16.4 ft. (at front and center). When the Drive mode button is pressed, the selftimer/wireless remote control timer icon is displayed on the LCD screen.

Drive and Power Source

The maximum continuous shooting speed of the Digital Rebel XTi is approx. 3 fps (in both the One-Shot AF and AI SERVO AF modes), the same as the Digital Rebel XT in spite of the larger files the XTi generates. This is achieved by a number of features: the reflex mirror drive and shutter drive are controlled independently; the advanced, Canondesigned and -manufactured CMOS sensor enables high-speed signal reading, and the DIGIC II image processor performs high-speed image processing. To limit the increase in power consumption required by high-speed reading, the output amp's power consumption has been minimized. Further, during long exposures, power
to the output amp is cut off and the standard current for the circuit drive is also suspended, as in the case of the Digital Rebel XT. The maximum burst in Large/Fine mode is approx. 27 shots for JPEG and 10 shots for RAW, twice as many as with the Digital Rebel XT. Also, with white balance bracketing enabled, up to 6 shots can be taken continuously, whereas only 2 shots were possible with the XT.

Recording Quality Max. Burst [Approx.] L/F 27 L/N 58 M/F 47 M/N 112 S/F 98 S/N 326 RAW 10 RAW+L/F 8
The figures above are based on Canon's testing standards with a 512MB CF card. (The figures can also vary depending on the CF card.) As with the K189, image processing occurs even during continuous shooting. This increases the maximum burst. During white balance bracketing, the maximum burst during continuous shooting will be lower.
The Battery Life table indicates the approximate number of shots that can be obtained under varying temperatures and shooting conditions. Using any of the following techniques can conserve power and increase the number of possible shots:

Temperature

Shooting Conditions AE 100% At 23C / 73F At 0C / 32F AE 50% FA 50% 360 280
Based on one fully-charged NB-2LH battery and CIPA testing standards.
1. With the Digital Rebel XT, the shortest power-off time was 1 minute. The default setting for auto power off is now 30 seconds. 2. Because the LCD screen can now be turned off/on with the DISP. button, battery power can be saved even if auto power-off has been disabled or set to a long time period. You can choose to display the camera settings only when needed. To make it easier to press the DISP. button, it is positioned at the top of the column of digitaloperation buttons on the camera back. 3. With the C.Fn-11-1 set to [Retain power OFF status] , the camera settings will not be displayed. In the Full Auto mode, because one need not worry about the shutter speed and aperture settings, using both C.Fn-11-1 and DISP. to display the camera settings only when necessary will further save battery power.

Folders

As high-capacity media (2 GB and up) have become more common because of the decline in their cost, Canon has chosen to take advantage by changing folder-related specifications to make them identical to those of Canons high end models. The changes improve the facility with which one can search for images when large numbers of them are involved. In previous models, one folder could hold up to 100 images; now, 9,999 images can be stored in a single folder. A Force-Reset option has also been added which causes the image number to reset as 0001, and a new folder to be created. Scenes shot separately can now be kept in separate folders, an obvious convenience.
Accessories and System Compatibility
The Digital Rebel XTi shares its major accessories with the its predecessor, the Digital Rebel XT. The BG-E3 battery grip makes it easy to shoot vertically and has magazines for either two NB-2LH batteries or three AA batteries. The EH18-L semi-hard case and EW100DBII wide strap continue. Power accessories include the CB-2LW battery charger (for Japan and the Americas), the CB-2LWE charger (for Europe, Asia, South Korea and China), the ACK-DC20/ACK700 AC adapter kits and the CBC-NB2 car battery charger. With a few minor exceptions, the Digital Rebel XTi is fully compatible with the vast Canon EOS system of EF and EF-S lenses, Speedlites, switches, remotes, cables and adapters.

Shutter

Type: Vertical-travel, mechanical, focal-plane shutter with all speeds electronically controlled Shutter Speeds: 1/4000 to 30 sec. (1/3- and 1/2-stop increments), X-sync at 1/200 sec. Shutter Release: Soft-touch electromagnetic release; shutter lag time approx. 100 msec. Self-Timer: 10 sec. delay, 2 sec. delay with C.Fn-7-1 (mirror lockup) Remote Control: Remote control with Remote Switch RS-60E3 or Wireless Remote Controllers RC-1/RC-5.

Built-in Flash

Type: Auto pop-up, retractable, built-in flash in the pentaprism Guide Number: 43 ft./13m (ISO 100) Recycling Time: Approx. 3 sec. Flash-ready Indicator: Flash-ready indicator lights in viewfinder Flash Coverage: 17mm lens focal length (equivalent to 27mm in 135 format) Flash Metering System: E-TTL II autoflash Flash Exposure Compensation: +/-2 stops in 1/3- and 1/2-stop increments EOS External Flash or Dedicated Speedlite: E-TTL II autoflash with EX Series Speedlites

Drive System

Drive Modes: Single, Continuous, Self-timer/Remote control Continuous Shooting Speed: Approx. 3 fps (at a shutter speed of 1/250 sec. or faster) Max. Burst During Continuous Shooting: JPEG: approx. 27 frames (Large/Fine); RAW: approx. 10 frames; RAW+JPEG: approx. 8 frames (Large/Fine)

LCD Monitor

Type: TFT color, liquid-crystal monitor Monitor Size: 2.5 in. diagonal with a viewing angle of approx. 160 vertically and horizontally Pixels: Approx. 230,000 pixels Coverage: Approx. 100% Brightness Control: 7 levels provided

Playback

Image Display Format: Single image, 9-image index, Magnified zoom (approx. 1.5x to 10x), Auto play, Auto review right after shooting, Histogram, Rotate, Jump Highlight Alert: In the single image (INFO) display mode, the highlight portions containing no image information will blink
Image Protection And Erase
Protection: A single image can be protected or unprotected Erase: A single image or all images stored in a CF card can be erased if they are unprotected Direct Printing from the Camera: Enabled with the Print/Share button Compatible Printers: CP and SELPHY Compact Photo Printers, PIXMA Photo Printers and PictBridge compatible printers (via USB Interface Cable IFC-400PCU) Settings: Print quantity, style (image, paper size, borders, date), trimming
Menu Categories: Shooting menu: red, Playback menu: blue, Setup menu: yellow LCD Monitor Languages: 15 languages provided (English, German, French, Dutch, Danish, Finnish, Italian, Norwegian, Swedish, Spanish, Russian, Simplified Chinese, Traditional Chinese, Korean, Japanese) Firmware Update: Enabled by the user

Power Source

Battery: One Battery Pack NB-2LH
Number of Shots Configuration NB-2LHX1 Normal temp (73F/23C) Low temp (32F/0C) Normal temp (73F/23C) Low temp (32F/0C) No Flash Used 500 frames 370 frames 1000 frames 740 frames 50% with Flash 360 frames 280 frames 720 frames 560 frames

NB-2LHX2

Dimensions And Weight
Dimensions (W x H x D): 4.98 x 3.71 x 2.56 in./126.5 x 94.2 x 65mm Weight: 18 oz./510g (body only)

Operating Environment

Operating Temperature Range: 32104F/040C Operating Humidity Range: 85% or less
Canon and DIGIC are registered trademarks, and SELPHY and PIXMA are trademarks, of Canon Inc. in the United States and may also be registered trademarks or trademarks in other countries. IMAGEANYWARE is a trademark of Canon. Microsoft and Windows are trademarks or registered trademarks of the Microsoft Corporation in the United States and/or other countries. Mac is a trademark of Apple Computer, Inc., registered in the United States and other countries. Adobe Photoshop is a registered trademark of Adobe Systems incorporated and its subsidiaries in each country. All other products and brand names are registered trademarks, trademarks or service marks of their respective owners.
All the specifications above are based on Canon's Standard Test Method. The camera's specifications and physical appearance are subject to change without notice. TFT monitor images shown in this white paper are simulated. Microsoft and Windows are registered trademarks or trademarks of Microsoft Corporation in the United States and / or other countries, Macintosh is a registered trademark or trademark of Apple Computer Inc. in the United States and / or other countries. CompactFlash is a trademark of SanDisk Corporation. Microdrive is a trademark of IBM Corporation. Adobe Photoshop is a registered trademark of Adobe Systems Incorporated and its subsidiaries in each country. The other product and brand names appearing in this brochure are trademarks or registered trademarks of their respective owners. TFT monitor images shown in this brochure are simulated.

V. CONCLUSION

The Canon Digital Rebel XTi is a formidable camera on many levels. Its image quality is unequaled in its category and is good enough to be compared favorably with cameras costing up to twice as much. Its ease of use enables owners with any level of expertise to get superb results. Its comprehensive dust solution mitigates one of the true annoyances of DSLR ownership. Its compact body and refined ergonomics make it a pleasure to live with. The Digital Rebel XTi will certainly be a great success in the marketplace. As photographers become acquainted with the XTi, it is likely that advanced amateurs and professionals will find it as irresistible as beginners will. For journalists, wedding photographers and portraitists, it has the resolution, the image quality and the proven reliability to serve nobly. When its complete compatibility with the legendary Canon EOS system is taken into account, the Digital Rebel XTi will certainly be recognized by photographers everywhere as the finest value and most appealing sales proposition of any DSLR in its price class and well beyond.