Thanks for that, Paul! That's logical and I'll personally continue to NOT do 
those things. ;)

Jack

--- On Mon, 6/21/10, P N Stenquist <[email protected]> wrote:

> From: P N Stenquist <[email protected]>
> Subject: Re: Cropping and Noise (?)
> To: "Pentax-Discuss Mail List" <[email protected]>
> Date: Monday, June 21, 2010, 7:00 AM
> 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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