LENSES
DISTAGON
FE 2.8/50
CLOSE FOCUS RANGE DATA: |
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Minimum distance object to film | 0.42 m |
Corresponding distance object to front lens | 0.25 m |
Maximum image scale | 1: 4.7 |
Corresponding area of coverage | 26 x 26 cm |
Corresponding exposure reduction | 0.4 |
ENTRANCE PUPIL POSITION
136 mm in front of the film plane. (at infinite focus setting):
The entrance pupil position is the correct position of the axis of rotation when making a panorama image by com- bining individual images of a scene.
Document ID: 3020517/0610
MTF
Modulation Transfer as a func- tion of image height at infinite focus setting.
Sagittal slit orientation drawn with continuous line and tan- gential with dashed. White light. Spatial frequencies 10, 20 and 40 lp/mm
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| f/2,8 |
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| f/5,6 |
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| 100 |
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| 100 |
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| 80 |
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| 80 |
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MTF (%) | 60 |
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| MTF (%) | 60 |
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40 |
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| 40 |
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| 20 |
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| 20 |
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| 0 |
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| 40 |
| 0 |
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| 0 | 10 | 20 | 30 |
| 0 | 10 | 20 | 30 | 40 | |
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| Image height (mm) |
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| Image height (mm) |
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1/2
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