Cropping in itself won't add noise. But if one crops to a smaller
image area and then upsizes the shot to the previous dimension, any
noise that was in the original will be magnified. Also if working with
jpegs rather than tiff file copies, recompression could leave some
artifacts, but I doubt tney'd be visible at web sizes.
Paul
On Jun 21, 2010, at 9:43 AM, Jack Davis wrote:
When I'm current on the PDML list, I sometimes take a few minutes
scanning dpreview. This AM I looked at a shot that received some
criticism for including extraneous elements better cropped off. The
contributor cropped as suggested (one side of a vertical, as I
remember without going back to it) and re-posted. The original
critic responded with, "better, but the image now exhibits noise
generated from the cropping." Followed by the suggestion there had
been an excess of same.
PS'g noise generation? Hadn't noticed.
Jack
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