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06-17-2008, 11:38 PM   #1
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Join Date: Apr 2008
Location: Barcelona, Spain
Posts: 264
Focusing problems on zoom lenses

Hello. I was just thinking about back or front focusing issues on lenses and I have a question:

If a zoom lens is suffering from back focus, does it affect all the focal range? or maybe it could be detectable when shooting on short focal and not on long one?



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