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Carl Zeiss Tessar lenses


I use a Fujica ST605N 35mm SLR. With its original Fujinon lens the aperture can be seen to be opening and closing when the exposure meter switch is pressed.
I have obtained a Carl Zeiss Tessar 2.8/50 Jena lens.
The aperture does not appear to move as the exposure meter switch is pressed, yet the results on a test film are good.
Can anyone explain please ?


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August 07, 2007

 
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