Re: Unique situation when creating scanner profile
Re: Unique situation when creating scanner profile
- Subject: Re: Unique situation when creating scanner profile
- From: david wollmann <email@hidden>
- Date: Wed, 23 Jan 2008 13:40:35 -0700
Date: Tue, 22 Jan 2008 16:00:09 -0800 (PST)
From: Allison Spooner <email@hidden>
Subject: Unique situation when creating scanner profile
however the scanner profiles are
not producing good scans, as when we "apply" the
profile in photoshop, the white background is being
converted to a yellowish gray color as soon as we
apply the profile. Against my best judgement, I'm
almost ready to recommend that they just continue to
adjust every scan during the scanning process (which
is what they were doing prior to my arrival) to
accommodate this "need for a white background".
If you always try to define paper white, zero, on the scanner you
will at times end up eating into your image and removing data that
you want. You will clip the end point. Once you clip it you can't get
it back unless you rescan.
Assign the scanner profile, then convert to your working space, then
add a Levels Layer. Use the eyedropper tool with the highlight point
set to Zero and then click in your file to set this point. You will
also probably find that as you measure different corners of the scan
with the highlight eyedropper tool that they are not always even and
you may need to click again to redefine your Zero point.
I scan a lot of Botanical drawings where the illustration sometimes
begins just above paper white. If I always tried to set paper white
in the scanner I'd loose a lot of info from the drawing. Setting
paper white afterwards gives me full control over the process.
David Wollmann
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