Graphics Programs Reference
In-Depth Information
Fig. 4-8 Using
Photoshop's Level
command, hold down the
Option/Alt key and drag
on the input sliders. The
preview of the image
changes as seen here,
where any visible pixel is
clipped to black or white
(per color channel). This
makes it very easy to
adjust either end of the
tone scale to set a specific
black or white clipping in
the image. The original
image is inserted in the
lower left so you can see
how it appeared prior to
producing this high
contrast preview. Notice
that the white highlights in
the original have been
clipped by sliding the input
highlight slider to 220.
how the data got into this working space or if a scanner profile even
existed. The shop could have simply assigned this profile to the scan. If
you are asked why you want the input profile from the scanner instead
of in a working space, tell them you want all the data the scanner was
able to produce and you may be editing in several working spaces.
I would also recommend you request the scan be provided in high-
bit data with no sharpening applied. Most shops oversharpen their scans.
Worse is sharpening the scan based on output to a press. This is a typical
mindset for those who produce output-optimized CMYK scans. Since
sharpening is based on so many parameters, like file size, image content,
and the output device, you want to apply sharpening in stages much like
you handle color management in stages. For a scanned archive that can
be used for a multitude of usages, you want as high a resolution scan
as you ever think you'll need in the widest gamut space you can get
from the capture device. An excellent article by color geek Bruce
Fraser that discusses this concept can be found at http://www.
creativepro.com/story/feature/20357.html.
What Products Are Available?
Most of the major players in the color management software world allow
users to build scanner profiles. Among those are X-Rite/Monaco EZ and
PROFILER, GretagMacbeth's ProfileMaker Pro and Eye-One Match
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