On Apr 11, 2006, at 8:09 AM, Mark Stringer wrote:
The profile in PS is for use on my calibrated monitor and printer.
Not necessarily anywhere else?
Should most work in PS be done in sRGB? Is sRGB the default in
most viewer/editors?
The vast majority of displays and rendering applications in the world
are uncalibrated, and the color gamut and gamma of most monitors are
moderately consistent due to the technology used. sRGB was designed
as a formal color space to describe this colorspace and present a
consistent color transformation for those applications that can
manage colors.
However, sRGB is a relatively small gamut ... larger than most
printer gamuts, but small compared to the possibilities of mixing
[EMAIL PROTECTED] RGB, never mind [EMAIL PROTECTED] RGB. The problem with
editing in sRGB is that it is relatively easy to run into the limits
of the gamut and clip the pixel values which, once the file is saved,
can never be recovered if you want to edit further.
For this reason, the better thing to do is to edit in a large
colorspace (Adobe RGB 1998 or ProPhoto). Doing so will eliminate the
possibility of clipping and data loss (particularly ProPhoto RGB,
which is pretty much a powerset of all other gamuts). Once you have
your work edited *and saved* to your desired form, you then convert
to sRGB (for the web) and can work the Conversion Options (engine,
intent, black point compression, etc) while watching the histogram
and the shifts in image color on your calibrated monitor. This will
let you get the desired output, as best possible. Then you Save As to
a new file with the converted color space profile embedded for
distribution to web, etc.
When printing, you use the original, large colorspace file and use
soft proofing with a printer profile to perform the correct
transformation for the printer setup's ink and paper.
Godfrey
