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A lot of you pointed out that Doc Watson wasn't sharp in my
last week submission to the gallery. After ruling out camera motion, subject
motion and examining the original scanned file which shows some grain on extreme
enlargement I have come to the conclusion that the UV filter on the lens was
dirty enough to degrade the image sharpness. Kodak showed this degradation
effect of a dirty lens verses a clean lens in a darkroom book many years
ago.
Roy |
