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The use of tools offered by ZEISS is highly recommended. You can purchase these tools directly
from ZEISS or your trusted ZEISS Dealer. See
Mount Change Accessories
Testing the Sharpness
1.
Fasten the siemens star test chart on a wall.
2.
Mount the ZEISS Supreme Prime on the camera.
3.
Mount the camera on a tripod.
4.
Position your camera at the testing distance of 3 m or 10 ft.
5.
Level the camera.
The testing distance is measured from the siemens star test chart
to image plane on your camera.
ZEISS Supreme Prime lens are clean.