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Ismaelg
Tinkerer
Username: Ismaelg

Post Number: 94
Registered: 11-2009

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Votes: 0

Posted on Saturday, December 08, 2012 - 08:44 pm:   

Hi,

How are you scanning the negatives? I think your problem could be in the scanning and not in the camera. If your test gave you the same results in 3 different cameras, I don't think there is anything wrong there.
I would do the following test:
Using a known sharp fast lens (a fast 50 comes to mind) take pictures with very narrow depth of field (wide aperture) of a pattern. you can use a dozen or so AA batteries lined up perpendicular to the camera (from close to it going away from the camera). Focus in the middle one. The result should be that the one you focused on should be properly in focus while the others (farthest and closest) out of focus. In the scan, if you see that other than the one you selected is in focus, yes you have focusing issue (back focus or front focus). But if the whole image is soft, your problem may well be in the scanning process itself.

Thanks,
Ismaelg

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