PC Mutar@ T* 1.4x Converter

HASSElBlAD

The PC Mutar@ T* lAx is another interesting
addition to the range of lenses tor Hasselblad cameras. It features a vertical shift facility tor perspective control, e.g. for avoiding converging lines. The PC Mutar@ T* lAx converter was optimized tor use with the 40 mm Distagon@ T* f/4Iens. This combination results in a PC Jens with an initial aperture of f/5.6, a focallength of 56 mm and a usable image circle diameter of 106 mm. The shift range of the jens is :!: 16 mm, and a scale allows repeatable settings. This configuration provides superb image quality even at full jens aperture.
No. + + 4 f/58 59.5 mm 106 mm 83 visible spectrum Hasselblad seriesto approx. 0.5 m 0 to 1:5.7
The vertical shift facility requires mechanical separation of the camera and the shutter. For this reason, the shutter must be separately cocked and then released synchronously with the camera using a special twin cable release. In its zero position, the PC Mutar@ T* lAx converter can also be used as anormal teleconverter with the Zeiss lenses up to a focallength of 100 mm. If the PC function of the Mutar converter is required, we recommend using it together with Zeiss lenses with a focal length tram f = 40 mm to f = 80 mm.

Distagon@ T* f/4

Weight: Entrance pupiI: Positlon*' Diameter*. Exit pupi!: Position*: Diameter*. Position of principal planes: H*' H'*'. Distance between first and last lens vertex:
with converter PC Mutar@ Number of elements: Number of groups: Max. aperture: Focallength: Image circle diameter: Angular field 2w: Spectral region: Filter: Focuslng range: Reproduction ratio:

T* 1.4x No. 104334

lens: approx. converter: approx. 35.4 mm behind the first jens vertex 10.3 mm 33.4 mm in front of the last jens vertex 19.4 mm 63.3 mm behind the last lens vertex 19.2 mm behind the last lens vertex

120.4 mm

J()() Years

Planar

Performance data:
Distagon@ T*f/4 - 40 mm Cat.-No. 104878 with PC Mutar@T*1.4x Cat.-No. 104334
1. MTF Diagrams The image height u - calculated tram
Modulation transfer T as a function of image height u. Slit orientation: tangential--White light. Spatial frequencies R= 10, 20 and 40 cycles/mm T f-number k = 4 (eff.) = 5.6 1.0 T f-number k = 5.6 (eff.) = 8 1,0 sagittal
the image center - is entered in mm on
the horizontal axis of the graph. The modulation transfer T (MTF = Modulation Transfer Factor) is entered on the vertical axis. Parameters of the graph are the spatial frequencies R in cycles (Iine pairs) per mm given at the top of this page. The lowest spatial frequency corresponds to the upper pair of curves, the highest spatial frequency to the lower pair. Above each graph, the f-number k is given tor which the measurement was made. "White" light means that the measurement was made with a subject illumination having the approximate spectral distribution of daylight. Unless otherwise indicated, the performan.ce data refer to large object distances, tor which normal photographic lenses are primarily used. 2. Relative illuminance In this diagram the horizontal axis gives the image height u in mm and the vertical axis the relative illuminance E, both tor full aperture and a moderately stopped-down jens. The values tor Eare determined taking into account vignetting and natural light decrease.

0,8 ""'

" :\

. "'.

",

:"\,

:\,,:.

~",

}'<L_____0,0 0

',>""

u [mm] 0,0 0

<, - -50 60

u [mm]
v Distortion in % of image height u 2,0 1,0
E Relative illuminance 1,0
""::~'-':;"""
. "'->"'"

-1,0 -2,0 '" c :s

""'\:":':.:.'" 0,4.:

,- - k-S:6 '-k=4'

j,:':B:'

.\.,.\:.

"'.

'0 '" 'S '" -5

3. Distortion Hereagainthe imageheightu isentered on the horizontal axis in mm. The vertical axis gives the distortion V in % of the relevant image height. A positive value tor V means that the actual image point is further tram the image center than with perfectly distortion-free imaging (pincushiondistortion);a negative V indicates barrel distortion.
'J eS '" "'.'0 iE :D ~; CO2i

>'0

a; ~ c '"

E c 2 5' c '"

c &

0 z '" Q2

6 '0 '"
Carl Zeiss Photoobjektive D-73446 Oberkochen Tel.: (07364) 20-6175 Fax: (07364) 204045
For advice, please contact

>c '" E

c::: '0 '" c

Subject to change.

Cl>. '" m. 0 :!: