Graphics Programs Reference
In-Depth Information
ColorMatch RGB
This RGB working space is based on the calibrated condition of the Radius
PressView display systems, is a better-sized gamut than either sRGB or
Apple RGB, and has a 1.8 gamma encoding. It's a good option for those
doing prepress work and ideal for users who might currently be working
with what would amount to the discontinued Radius PressView displays.
Since I used PressView displays for many years, I often use this working
space for what some call legacy files ; those files from Photoshop versions
earlier than 5.0. When I open untagged documents I created on my
PressView monitor from earlier versions of Photoshop, these images
preview accurately since these documents originally were created in the
ColorMatch RGB working space! If you need to send an RGB document
to a client you know will view the image on a Macintosh, ColorMatch
RGB is a good option to use. It should preview reasonably well on such
a system outside an ICC-savvy application due to its gamut size and its
1.8 gamma encoding.
Adobe RGB (1998)
This working space has a larger gamut than ColorMatch RGB and utilizes
a 2.2 gamma encoding. Adobe RGB (1998) is even better for prepress
work because of its larger color gamut, which can fully contain the
(SWOP) CMYK four-color output gamut. Many users have had good
results using Adobe RGB (1998) since its gamut is a good compromise
between holding colors for many output devices while not being vastly
larger than some of the current displays on the market. Adobe RGB
(1998) has thus become a common working space among professionals
although I would be hard-pressed to call it a standard.
Wide Gamut RGB
This is a very wide gamut RGB color space with a 2.2 gamma encoding
and includes a large number of colors that can't be printed on many
output devices. Some have suggested it would be a good color space for
48-bit digital camera files for output to film recorders; a device that
images back onto conventional film. Wide Gamut RGB is so wide that
there are many colors that can't be displayed on your monitor! However,
it is said to contain most of the Ektachrome gamut that so far has been
unavailable to digital image editors who may wish to contain this broad
gamut of colors.
ProPhoto RGB
This is a working space created by Eastman Kodak Company. When first
released it was named ROMM RGB . This space is extremely large and has
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