[filmscanners] Re: another Sharpening question

["Arthur Entlich" <artistic@telus.net>]

Honestly, Ed, I would make up a few examples both unsharpened and
sharpened to different degrees and ask someone who you trust for an
opinion.  I almost always use *some* USM even on softer edged subjects
because it changes the contrast ratios a bit, and defines some edges
where appropriate.  But it is somewhat subjective.

Even with skies, I find USM makes them slightly more dramatic.  What
size are you going to be printing at?

One thing I almost always do is if I know I will be heavily jpegging an
image, I pre-USM oversharpen.  This is based upon my personal taste and
experience, not any specific theory.  I just find jpegging softens
edges, and the image looks better after jpegging if the image has been
oversharped slightly beforehand.  I find doing it after jpegging tends
to over emphasize jpeg artifacts.

It may be, however, that the image file ends up larger doing what I suggest.

Art

Ed Verkaik wrote:

> From: "Laurie Solomon" <laurie@advancenet.net>
> I am not sure that that is an answerable question without actually seeing
> the various images.
>
>
> Just imagine a typical sky -- either one with cloud elements and blue 
> sections,
> or cloudy with varyiong degree of light and dark areas (stormy sky).  Surely
> there are generalizations we could apply to such subjects?  I always assumed
> that since clouds have no natural "edges" that sharpening is not relevant and
> maybe even detrimental.  Unfortunately, my limited vision does not detect fine
> changes in contrast or sharpness.  In a perfect world, I would try to come up
> with a single (mild) degree of sharpening to apply to all images, either 
> through
> an action or with dedicated software.  I'm hoping the experience of others can
> lead me to a solution.
>
> Ed Verkaik
>


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