[filmscanners] Re: Background Film Grain

["Anthony Atkielski" <anthony@atkielski.com>]

What threshold are you setting on the unsharp mask?  If you leave it at
zero, the tiny differences in grain or dye clouds will be enhanced, making
them more obvious.  If you set it to 2 or 5 or whatever, the enhancement of
grain is significantly diminished.  I usually leave it between 2 and 5.

The main subject has the same problem as the background, but since the
background is out of focus and thus smoother and less filled with fine
detail, there is nothing to distract your attention from the grain.

----- Original Message -----
From: <HMSDOC@aol.com>
To: <anthony@atkielski.com>
Sent: Thursday, May 23, 2002 17:00
Subject: [filmscanners] Background Film Grain


Most of my images are scans from slides or negatives made at 4000ppi.  I
find
that to get the main focused subject of the image sharpened with USM I also
get marked sharpening of  the grain in the out of focus background, which
detracts from the image.  The main subject, which is in focus, does not seem
to have a significant problem with grain.  What is the best method of
adequately sharpening an image and yet keeping the background smooth and not
overly grainy appearing??  Any help would be appreciated.

Howard

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