Nikon D300 Complete Manual page 677

Note: In case you haven't already figured it out, the color LCD on
the D300's back is no different than a small computer
monitor. It matches the sRGB Color Space fairly closely. If
you want to assess color—even crudely—on the D300's
color LCD, the camera needs to be set to sRGB.
If you shoot pictures to be used on Web sites or in computer-
based products, sRGB is the Color Space to use, though its
narrow nature doesn't give you much flexibility in subtle
color adjustments. Also, if you expect to print directly from
your storage card (either on a DPOF or PictBridge-aware
printer or at a photofinisher that uses, say, a Fuji Frontier),
then you should probably choose sRGB as your Color Space.
AdobeRGB is a wider Color Space, intended for print
technologies that can reproduce a large range of subtle color
differences. If you intend to take JPEG or TIFF pictures for
print on your own personal inkjet or high-end digital printer, I
suggest that you select AdobeRGB as your Color Space. Note
that colors may seem to be less saturated when displayed on
your computer (especially if you haven't profiled your
monitor using a product such as Colorvision's Spyder
hardware and Optical software [see the review on my site:
http://www.bythom.com/colorvision.htm]), but the color is
more representative of what you'll see in final prints.
Note: And now the opposite is true of the last note: if you've set
the camera to a Color Space of AdobeRGB you can't use
the color LCD on the D300 to assess color.
The Color Spaces on the D300 appear to be accurate, and I
applaud Nikon for giving us a choice.
Unfortunately, it's not just a simple matter of setting the
camera's Color Space using the options on the SHOOTING
menu (more on that in a bit, too). Instead of embedding the
actual Color Space information, as is often done in graphic
design firms with their files, all that choosing a Color Space
does is place a marker in the EXIF data as to what the camera
is set to, and changes the position of the _ in the filename.
Thom Hogan's Complete Guide to the Nikon D300
V1.02
Page 677