ProPack Camera

User Guide
Underwriters Laboratories, Inc. requires that the following information be provided.

IMPORTANT SAFEGUARDS

AS WITH ANY BATTERY-OPERATED EQUIPMENT, OBSERVE THESE BASIC SAFETY PRECAUTIONS. 1.FOLLOW ALL INSTRUCTIONS. 2.CLOSELY SUPERVISE UNIT WHEN IT IS BEING USED BY OR NEAR CHILDREN. 3.ALWAYS USE BATTERIES RECOMMENDED. 4.DO NOT USE UNIT IF IT HAS BEEN DROPPED OR DAMAGED UNTIL IT HAS BEEN EXAMINED AT AN AUTHORIZED POLAROID SERVICE CENTER. 5.TO AVOID ELECTRICAL SHOCK HAZARDS, DO NOT DISASSEMBLE UNIT. SERVICE OR REPAIR WORK MUST BE DONE ONLY BY AN AUTHORIZED POLAROID SERVICE CENTER. INCORRECT REASSEMBLY CAN CAUSE ELECTRICAL SHOCK WHEN UNIT IS USED AGAIN. DO NOT IMMERSE UNIT IN WATER OR OTHER FLUIDS.
PLEASE KEEP THESE INSTRUCTIONS

Introduction

This instruction book describes the following: The Polaroid ProPack Professional Instant Camera (camera only) The Polaroid ProPack Professional Instant Camera System (camera and Polaroid ProFlash electronic flash unit) The camera models are identical in function. If you do not have the System, disregard the sections that relate to the operation of the ProFlash. The camera features automatic exposure control and easy focusing with the use of a distance scale marked on the lens barrel. A built-in digital timer helps you keep track of your film development time. The camera accommodates Hi-Power or regular flashcubes for flash pictures. There are nine different kinds of Polaroid pack film to choose from to suit your particular need, including color and black-and-white. The system is ideal for professional and business use when instant, high quality images are required. The ProPack System includes the ProFlash electronic flash unit, featuring automatic exposure control and a powerful output that allows you to photograph distant subjects (50-75 ft./15.2-22.9m) with flash when using high speed black-and-white film.

Picture-taking reminders

Nonflash pictures: Turn off flash (or remove cube) Set film selector Check L/D on camera Set distance scale Frame subject and press shutter release Flashcube pictures: Be sure subject is within flashcube range Insert cube Set film selector Check L/D on camera Set distance scale Frame subject and press shutter release ProFlash pictures: Be sure subject is within flash range Turn on flash Set film selector Check L/D on ProFlash Set distance scale Frame subject and press shutter release

Call us, free

Whenever you have a question about your equipment or pictures, call us toll-free at 800-343-5000 from anywhere in the U.S.A. We can be reached every weekday from 8 a.m. Film to 8 p.m., Eastern Time. Your camera uses nine different types of You can reach us at the Americas Business Polaroid instant pack film in two different picture Center, 201 Burlington Rd., Bedford, Mass. 01730. formats: Include your address and a day-time phone Square format: 31/4 x 33/8 in. (8.5 x 8.6 cm) number. Rectangular format: 3 /4 x 4 /4 in. (8.5 x 10.8 cm) Outside the U.S.A., contact the nearest Polaroid office.
Film Type Polaroid Polacolor Type 88 Polaroid Polacolor Type 108 Polaroid Polacolor Type 669 Polaroid Polacolor Type 668 Polaroid Type 87 Polaroid Type 107 Polaroid Type 107C Polaroid Type 667 Polaroid Type 665

ISO Speed equivalents 80/20o 80/20o 80/20o 80/20o 3000/36o 3000/36o 3000/36o 3000/36o 80/20o
Picture format Square Rectangular Rectangular Rectangular Square Rectangular Rectangular Rectangular Rectangular
Picture type Color prints Color prints Color prints Color prints Coaterless black-and-white prints Black-and-white prints Coaterless black-and-white prints Coaterless black-and-white prints Black-and-white prints and negatives
Each pack produces 8 prints.
The numbers throughout the text refer to pictures at the end of this book. The Polaroid ProPack camera (pictures 1-3) A. Film tab slots B. Neck strap C. Camera cover D. Cover release E. Tripod socket/Flash bracket socket F Locking bars (both must be firmly locked. when camera is open) G. Shutter release H. Cable release socket I. Distance scale J. Viewfinder K. Film selector L. Lighten/Darken control M. Electric eye N. Flashcube socket O. Flashcube shield P Lens. Q. Ring handle R. Digital timer S. Film door T. Latch (to unlock film door) U. Developer rollers (see picture 8A) The Polaroid ProFlash electronic flash unit (picture 4); ProPack System only A. Lighten/Darken switch B. Ready indicator light C. OFF/ON switch (0/1) D. Electric eye E. Tripod socket F Mounting screw. G. Mounting bracket H. Battery door I. Hand strap

Get Ready

Load the batteries into the ProFlash (ProPack System only) Slide the door in the direction of the arrow to open it (5). Insert four 1.5V AA alkaline batteries, matching the + and - symbols on the inside of the compartment, then slide the door shut while holding the batteries in place. (Rechargeable 1.2V nickel-cadmium batteries also can be used.) Mount the ProFlash (ProPack System only) Position the flash unit and camera as shown (6). Screw the mounting bracket into the socket on the camera until is it firmly attached. For convenience, leave the flash unit mounted to the camera at all times. Open the camera Push in the cover release (1D) and lower the cover until the camera locks in the open position. To close the camera, make sure there is no flashcube in the flashcube socket. Then push in the cover release or press down on both locking bars (2F). Close and latch the cover. Load the film Open the latch, then open the film door (7), away from direct sunlight. Check the developer rollers (8A); they must be kept clean (see Maintenance). Hold the film pack by the edges and insert it (8). Be sure the white tabs are not caught between the film pack and the camera body (9). Close and latch the film door; the black film cover should appear (10). Holding the camera in your left hand by the handgrip on the flash unit (ProPack System, 11) or by the ring handle (ProPack camera, 12), pull the black film cover straight and all the way out of the camera.

Before you take a picture
Set the digital timer (13) Press and hold the SET button until the correct development time (see the film instructions) is displayed. The timer will always return to this time after a development cycle until you reset it. To reset the timer to a new development time: View and frame your subject To reset it to a higher number than is now displayed, simply press the SET button until the new As you look through the center of the viewfinder, you should see a white frame. If you do not see time is displayed. To reset it to a lower number: all four corners of the frame, move the camera slightly until you do. 1. Press START once (countdown begins). Whatever you want to include in rectangular pictures (Types 108, 669, 668, 107, 107C, 667 2. Press START again (countdown stops in and 665 film) must be placed within the full area mid-cycle). of this white frame (17). For square-format pictures (Type 87 and 88 3. Press SET once (zero is displayed and preset film), use only the area within the white frame that time is cancelled). is to the left of the two inner notches (18). 4. Press SET steadily until the new time is displayed. Check the Lighten/Darken control on the camera It should be set to normal as shown (14) except in certain lighting (see To take bright outdoor daylight pictures) and in hot and cold weather with color film (see film instructions). Also, use it to retake a picture that is too light or too dark. Each mark represents 1/3 stop change in exposure. When you are using the ProFlash, use the Lighten/Darken switch on the flash unit instead (see To take pictures with the ProFlash). Set the film selector (15) When using color film or Type 665 film, set it to 80. When using black and white 3000 speed film, set it to 3000 for daylight and flashcube pictures, 3000ER for ProFlash pictures at close and medium range, and to 80 for ProFlash pictures of distant subjects. See Picture-taking guide for flash ranges. Also, you can take black-and-white pictures indoors by using available light from the scene and setting the film selector to 3000ER; for details, see To take indoor pictures without flash.
Set the distance scale (16) Measure or estimate the distance from the camera lens to your subject. Turn the lens ring until the distance (in feet or meters) is opposite the symbol () above the lens. Be sure your subject is within the range shown in the Picturetaking guide for your picture-taking situation.

Take the picture

Picture-taking guide This guide is designed to give you good pictures for the conditions shown. However, deviations from these recommended situations or settings Film Speed Scene lighting ISO Bright daylight Bright indoors Indoors, dark outdoors 3000/36o 80/20o 3000/36o 3000/36o 3000/36o 80/20o 80/20o 3000/36o 3000/36o 80/20o System lighting No flash No flash No flash Hi-power cube Regular cube Hi-Power cube Regular cube ProFlash ProFlash ProFlash can produce acceptable results depending on the scene. Experience in a variety of picture-taking situations will be most helpful in understanding the capabilities of your equipment. Film selector setting 3000ER 3000ER 80 80

Subject distance 3 ft.- (0.9m- ) 3 ft.- (0.9m- ) 3 ft.- (0.9m- ) 4-12 ft.(1.2-3.7m) 4-8 ft.(1.2-2.4m) 4-12 ft.(1.2-3.7m) 4-8 ft.(1.2-2.4m) 3 1/2-25 ft.(1.1-7.6m) 50-75 ft.(15.2-22.9m) 3 1/2-12 ft.(1.1-3.7m)*

ProPack System

Both cameras

Indoors, dark outdoors

*When photographing distant subjects with flash, 80 speed film cannot be used. To take bright outdoor daylight pictures Stand so the sunlight comes from behind you or from the side. Watch the background. When the light on the background is much brighter than the light on your subject, your subject will be too dark in the finished picture. In these conditions, set the Lighten/Darken control on the camera toward Lighten and take the picture. When the background is much darker than your subject, your subject will be too light in the picture. Set the control toward Darken before taking the picture. 1. Set the film selector to 80 for color film (and Type 665 film) or to 3000 for black and white 3000 speed film. 2. ProPack System: Be sure the flash unit is switched off. Both cameras: Be sure there is no flashcube in the flashcube socket. 3. Once you have set the distance scale and framed your subject, press the shutter release as described. To take indoor pictures without flash Your camera has an extended range (ER) shutter that lets you take black-and-white pictures without flash indoors by using available light in the scene. (If there is not sufficient light in the scene, use flash.) 1. Load the camera with Type 87, 107, 107C or 667 black-and-white film. 2. Set the film selector to 3000ER, and rely on the existing light from the scene. Indoors the light source should be high overhead, behind you or to your side. Avoid bright lights facing the camera. For best results, use a tripod. 3. ProPack System: Be sure the flash unit is switched off. Both cameras: Be sure there is no flashcube in the flashcube socket. 4. Once you have set the distance scale and framed your subject, press the shutter release as described.
To take flashcube pictures Insert a Hi-Power or regular flashcube into the flashcube socket on the camera (19), and turn it clockwise as far as it will go. After four flashes, the cube will stop at a 45 degree angle. Partially used cubes should be wound, removed, and reinserted so a used bulb faces down and a fresh one forward. Before closing the camera, remove the flashcube. The flash range for Hi-Power cubes is 4-12 ft. (1.2-3.7m) and for regular cubes is 4-8 ft. (1.2-2.4m); be sure your subject is within those ranges. Set the film selector to 3000 for 3000 speed film and to 80 for 80 speed film. To take pictures with the ProFlash (ProPack System only) For best results, place your subject near a lightcolored background, if possible. When photographing more than one subject, place each subject about the same distance from the camera so they all will be lit evenly by the flash. 1. Turn on the flash unit (20A). The green LED will light when the flash is fully charged. 2. Be sure the film selector on the camera is correctly set for your picture-taking situation. Note: For distant subjects (50-75 ft./15.2-22.9m) at night, you must use 3000 speed film and set the film selector to 80. Color film cannot be used for flash pictures beyond approximately 12 ft. (3.7m).

Film Color ISO 80/20o* B&W ISO 3000/36o B&W ISO 3000/36o Film selector 80 3000ER 80 Flash range 3 1/2-12 ft. (1.1-3.7m) 3 1/2-25 ft. (1.1-7.6m) 50-75 ft. (15.2-22.9m)
4. Make sure the ready light (20C) is lit, indicating the flash is fully charged. Once you have set the distance scale and framed your subject, press the shutter release as described. 5. After you take a picture, the ready light will go out for a few to several seconds* to indicate that the flash is charging. (If the flash takes more than 30 seconds to charge, it is time to replace the batteries in the flash unit; see instructions under Maintenance.) When the ready light comes on, you can take another flash picture. If you dont plan to take another flash picture right away, turn off the unit to minimize battery drain. Always turn off the flash unit when not in use. Note: To help prevent battery drain, the flash unit will automatically shut off after about three minutes. The switch will still be on, but the ready light will not be lit. To take another flash picture, move the Off/On (0/1) switch to off then on again. (If you neglect to do this, the flash will fire but your picture may be too dark.) 6. If you are using black and white 3000 speed film and your next picture is a bright outdoor (nonflash) picture, be sure to change the film selector to 3000. Press the shutter release You must keep the camera steady as you take the picture. Get a firm grip with your left hand. Keeping your right thumb in line with the shutter release, place it under the front of the camera as shown (21). Slowly press the shutter release with your right forefinger. At the same time, press up with your thumb to help keep the camera steady. Hold the shutter release down for at least one second.
*This setting also applies to type 665 B&W film. 3. Be sure the Lighten/Darken switch on the ProFlash is set to normal as shown (20B). Use it to lighten ( ) or darken () a picture that is too dark or too light. Also, use it in hot or cold weather with color film (see film instructions). Each setting will change exposure by 1/2 stop. The L/D control on the camera does not function for electronic flash pictures.

*Recharge time depends on the freshness of your batteries, and subject distance.

Develop the picture

See the film instructions for the correct development time. ProPack System: Hold the camera by the handgrip on the ProFlash while pulling tabs, as shown in (11). ProPack camera: Hold the camera by the ring handle while pulling tabs so the camera hangs freely, as shown in (12). Pull the white tab Grip the center of the white tab. Pull it out of the camera (22). A yellow tab will appear. If no yellow tab appears when you pull a white tab, see below. Pull the yellow tab Grip the center of the yellow tab. Pull straight, at a moderate speed, until the film is out of the camera (23). Start timing development now. Start the timer The correct development time should already be set (see Set the digital timer). Press the START button once (24); the timer will count down from the preset time to zero. At the end of the development time, a series of short tones will sound. Peel the print immediately, as described below. The timer will reset for the next picture. (To change the development time, see Set the digital timer.) Peel the print At the sound of the tones, peel the print from the negative, starting at the end near the yellow tab (25). Discard the negative, except when using Type 665 film (see film instructions). If no yellow tab appears when you pull a white tab Do not pull another white tab. In dim light, open the camera, holding the film pack in position (26). Gently pull out the top yellow tab and discard it (27). Clean the developer rollers, if needed. Unfold the white tab. Then close the camera, with the next white tab showing.
Picture faults and causes
Black or very dark picture: Batteries dead or inserted incorrectly in camera or flash unit; wrong film type; wrong film setting; flash unit not turned on (flash picture); used cube in cube socket (nonflash picture); camera or flash unit may need repair. Dull, weak colors: Not developed long enough. See film instructions. White or very light picture: Wrong film setting. Missing corner: Yellow tab pulled out at an angle. Evenly spaced dots: Dirty rollers. Vertical streaks: Stopped or hesitated when pulling yellow tab. Blurry (out-of-focus) picture: Distance scale not set correctly; subject movement; camera movement (use a tripod); not enough available light (use flash if possible). White specks: Yellow tab pulled too fast.

Caution

The Polaroid photographic process uses a caustic jelly which is safely packed inside sealed containers within the film pack. If accidentally you should get some of this jelly on your skin, wipe it off immediately. To avoid an alkali burn, wash the area with plenty of water as soon as possible. It is particularly important to keep the jelly away from eyes and mouth. Keep discarded materials out of reach of children and animals, and out of contact with clothing and furniture, as discarded materials still contain some jelly.

Maintenance

To clean the rollers Lift the two metal loops as shown (28) and remove the rollers. (The serial number is located beneath the rollers.) To clean them, use a cloth dampened with water (29). Never scrape the rollers with anything metallic, nor with your fingernail; do not attempt to disassemble the rollers. Blow out any dust in the back of the camera. Clean slots (30A) and (30B) if necessary. Replace the rollers. To test the camera batteries Without film or electronic flash connected, set the film selector to 80. Cover the electric eye with your finger and aim the camera at a light (not the sun). Press and hold down the shutter release. You will hear a click. Uncover the electric eye. You will hear a second click if the batteries are good. To change the camera batteries (at least yearly) With the cameras front cover closed, open the camera back. Pull down on the fingergrip (31A) and remove the old batteries. Using two new batteries (size AA, 1.5V alkaline), point the end of the left battery and the + end of the right battery toward the top of the camera, as shown on the battery holder (32A). Insert each battery between the metal contacts. Close and latch the fingergrip. To change the ProFlash batteries (ProPack System only) If the flash takes more than 30 seconds to charge, replace the batteries with four new batteries (size AA, 1.5V alkaline) as described under Load the batteries into the ProFlash. Rechargeable 1.2V nickel-cadmium batteries also can be used. ProFlash battery life: To prevent draining the batteries, always turn off the ProFlash when not in use. (To help prevent battery drain, the flash unit will automatically shut off after about three minutes.) To maximize battery life, turn off the electronic flash immediately after taking a flash picture, before it has a chance to recharge.

To change the digital timer batteries If the display or tones fade, or the timer stops functioning, open the battery cover and replace the batteries with two new batteries (GP-89A or equivalent, 1.5V), positioned as shown (33). Replace the cover. To restore the display, press SET and START simultaneously. Storage of the ProFlash (ProPack System only) If you are storing the unit for an extended period, remove the batteries and store them separately. This will prevent possible damage to the unit from leaking batteries. Protect the flash unit from moisture and from extreme heat and cold. Storage in extreme temperatures can shorten battery life. Keep the batteries and battery contacts clean. To rethread the neckstrap If you remove the neckstrap, be sure to thread it as shown in the illustration (34) when replacing it on the camera. It is particularly important to thread it as shown when the Polaroid ProFlash is attached to the camera. To clean the camera lens Wipe it with a clean cloth. Never use siliconetreated eyeglass tissue. Never leave your equipment in a hot, humid place.

Repairs

If you believe your equipment needs repair, before you send it to us, call the Polaroid Resource Center toll free and explain the problem. You may be able to use your equipment again right away, without repair. Your Polaroid dealer will return your equipment for repair, should that ever be necessary. Or you may bring it to a Polaroid Service Center, which offers walk-in service. Many repairs can be made while you wait. Or, you may mail the equipment to Polaroid for repairs. Pack it carefully. Address it to the nearest Polaroid Service Center and send it by insured parcel post. Include a note describing the problem and, if you can, pictures that illustrate it.
Full one-year warranty (U.S.A. only) Full one-year warranty (outside the U.S.A.)
If your camera or electronic flash unit proves to be defective within the warranty period we will repair it or at our option replace it with a similar product without charge. The warranty applies whether you do or do not return a registration card to us. The warranty period is one year from the original date of purchase. To verify the warranty period, you should keep the sales slip or other proof of the purchase date. Without this information, the warranty period is two years from the manufacturing date on the equipment. If, within the warranty period, the equipment is mailed to us for service from inside the U.S.A., it will be returned with a postal refund. This warranty does not cover damage caused by accident, misuse, or tampering with the equipment, and a charge will be made for such repairs. For warranty service the equipment must be returned to and repaired by a Polaroid Service Center or Authorized Service Center. You can return the equipment through your Polaroid camera dealer. If that is not convenient, see Repairs for information on returning the equipment, or call the Polaroid Resource Center toll free at 800-343-5000 from anywhere in the U.S.A. We can be reached Monday through Friday, 8 a.m. to 8 p.m., Eastern time. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. This warranty excludes all consequential damages. Some states do not allow the exclusion or limitation of accidental or consequential damages, so the foregoing limitation or exclusion may not apply to you. If your camera or electronic flash unit proves to be defective within the warranty period we will repair it or at our option replace it with a similar product without charge. The warranty applies whether you do or do not return a registration card to us. The warranty period is one year from the original date of purchase. To verify the warranty period, you should keep the sales slip or other proof of the purchase date. Without this information, the warranty period is two years from the manufacturing date on the equipment. This warranty does not cover damage caused by accident, misuse, or tampering with the equipment, and a charge will be made for such repairs. For warranty service the equipment must be returned to and repaired by a Polaroid Service Center or Authorized Service Center. This warranty does not affect your statutory rights.

Polaroid Service Centers and Offices
California Polaroid Corporation 3232 West MacArthur Blvd. P.O. Box 25200 Santa Ana 92799-5200 Telephone: (714) 641-1200 Canada Polaroid Canada, Inc. 350 Carlingview Drive Rexdale, Ontario M9W 5G6 Telephone: (416) 675-3680 Georgia Polaroid Corporation 5601 Fulton Industrial Blvd., S.W. Atlanta 30378 Telephone: (404) 346-1717 Massachusetts Polaroid Corporation 201 Burlington Rd. Bedford 01730 Telephone toll free: (800) 343-5000 Additional Service Centers: There are many other Polaroidowned and independent Authorized Service Centers in the U.S.A. and overseas. To locate the one closest to you or to where you are travelling, call our Customer Service numbers listed above.
Polaroid, Polacolor, registered trademarks of Polaroid Corporation, Cambridge, Mass., U.S.A. PXW2664B 6/87 TS/DA Printed in U.S.A.

Film Data Sheet T-84 Black and White Pack Film

Description

3URIHVVLRQDO B&W 3DFN )LOP

[ LQFK [ FP

Medium-speed, medium-contrast sheet film for black and white prints. Coaterless, wide tonal range, intended for exposures of 1/10 second or faster, matches speed of ISO 100 chrome films.

Key Applications

Professional photography proofing Test shots less than 1/10 second or with strobe Scientific imaging (strobe or shorter exposures only)

Compatible Hardware

Film Speed

ISO 100/DIN 21

Cameras or instruments with CB-1034 or CB-80 camera backs MiniPortrait Camera models M484, M485b, M486V, and M488V ProPack Camera

Special Treatment

Processing the film for longer than 3 minutes may affect image contrast and density to some extent. For optimum image stability at temperatures above 75F (24C), film should not be processed for longer than one (1) minute. At colder temperatures, process the film for a longer time as indicated in the film instructions. A picture processed for too short a time will have dull grays, mottle and little contrast. However, if more contrast is required, the processing time may be extended by 15 seconds (for example, process for 60 seconds rather than 45 seconds). This may increase the contrast and density, but may also result in some loss of gray.

Format

31/4 x 33/8 in. (8.3 x 8.6 cm) Pack Film

Image Area

23/4 x 27/8 in. (6.9 x 7.2 cm)

Finish

Glossy

Exposures per Unit

10 exposures per pack

Development Time

30 seconds at 70F (21C)

Caution

This film uses a small amount of caustic paste. If any paste appears, avoid contact with skin, eyes and mouth and keep away from children and animals. If you get some paste on your skin, wipe it off immediately, then wash with water to avoid an alkali burn. If eye contact occurs, quickly wash the area with plenty of water and see a doctor. Keep discarded materials away from children, animals, clothing and furniture.

Limited Warranty

See information on the film box. Polaroid, Polapan, and ProPack are trademarks of Polaroid Corporation, Waltham, MA 02451 USA. All other product names may be the property of their respective owners.
Film Data Sheet Technical Data Polapan Pro 100 B&W T-54 (4x5 sheet), T-554 (4x5 pack), T-664 (pack) T- 84 (pack) T-804 (8x10 sheet)
The information below represents the typical performance of Polaroids Polapan 100 black and white films. Specific film lots may vary.
Recommended speed (ISO) Recommended processing time and temperature at 70oF/21oC Spectral sensitivity Resolution (1000:1): Contrast

100/21o

Characteristic H&D curve for normal, hot and cold development

45 Seconds

Panchromatic 20 - 25 line pairs/mm Medium
55oF/18oC 70oF/21oC 95oF/35oC 2 Sample Density -3 -2 Relative Log Exposure -1 -0
Processing time and temperature For best results process at temperatures above 60oF(16oC).

Time in seconds 90

Exposure Adjustment -1/3 stop None None 1/3 stop 1/3 stop
Characteristic curve for normal, under and over development
3 H&D Curves @ o 70oF/21 C 30 sec. 45 sec. 180 sec.

Sample Density

D-Max: The density value for the films darkest black. D-Min: The lowest density value that a film exhibits. In prints, the whiteness of the brightest highlight, relative to the unprocessed print.
0 -3 -2 -1 Relative Log Exposure 0
Slope: The positive ratio of the log E increments of the straight line region of the curve, as determined by the 1/4-3/4 increment method. The slope of an H&D curve indicates the overall contrast of a film: low contrast slopes less than 1.10; medium contrast slopes from 1.10 to 1.70; high contrast slopes greater than 1.70.
Film Data Sheet Technical Data Polapan Pro 100 B&W T-54 (4x5 sheet), T-554 (4x5 pack), T-664 (pack), T-84 (pack) T-804 (8x10 sheet)
Reciprocity law failure A wide range of shutter speeds can be used without loss of film speed. For longer exposure times, some exposure compensation is suggested.

Reciprocity Law Failure

0.5 Speed Change (f -stops) 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 0.001 0.01 0.10 Exposure Time (seconds) 100
Modulation Transfer Function

% Modulation

Spectral Sensitivity
Spatial Frequency (cycles/mm)

Filter Factors

Filter no. 6 1/1/2/1 1/3 1/3 1/2
Light source at 3200oK - Tungsten
Aperture adjustment (f-stops Filter factor (exposure multiplier)
Light source at 5500oK - Daylight
Aperture adjustment (f-stops) Filter factor (exposure multiplier)

Wavelength (nm)

Reciprocity: The ability of the film to respond in a constant manner to a constant exposure (light intensity x time). Reciprocity failure occurs during very long or very short exposures, requiring the photographer to increase exposure. Spectral Sensitivity: Shows the equivalent energy needed at each wavelength in order to activate the emulsion so that it produces a neutral density of.75.