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different devices and in different applications. If your desired output color
space is not listed, choose KODAK sRGB Display.
The Output Profile you choose determines whether color values on the
right of the screen appear as CMYK or RGB values.
Note:
If your Monitor or Output profile is not available, you may be able
to download that profile from the web site of the vendor of that device.
Doing so allows you to add other RGB, Lab, and/or CMYK profiles. If you
are working on a Macintosh, when you download a new ICC profile (its
filename will have a ‘.icm’ filename extension), place that profile in the
ColorSync Profiles folder in the System Folder. On a PC-compatible, when
you download a new ICC profile, if you are working with Windows 98 SE
place it into location C:\WINDOWS\SYSTEM\COLOR, but if you are
working with Windows 2000 or Windows NT 4.0 place it into
C:\WINNT\system 32\color.
Color Depth
Set Color Depth by choosing either 8 Bit or 12 Bit per channel from the
Color Depth drop-down list. With either setting the scanner performs a 12-
bit scan (or prescan). However, the setting you choose determines how
much data are then transferred from the scanner to the scanner software;
with 12 Bit selected, the full 12 bits of data per pixel are transferred, while
with 8 Bit only 8 bits are transferred. Transferring less data (8 bits) re-
quires less time; however, transferring more data (12 bits) means the data
reaching the scanner software are of higher quality.
Even if you select 8 Bit, once the data are transferred to the scanner soft-
ware, they are expanded to 12 bits; therefore with either choice (8 Bit or 12
Bit), further image processing in the scanner software is done in 12-bit
mode.
Finally, with either choice, when the data are moved into Photoshop from
the scanner software, Photoshop converts the data into a single 8-bit byte
per pixel.
When you are working in CMYK, there are 4 channels of data, while in
RGB there are 3. When working with black and white film, there are 3
channels, each containing the same data.
