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Ray & Bernie, As I understand it, one of the main reasons for inventing the sRGB color space as a universal standard, is that the sRGB profile doesn't then have to be attached to the image file. The operating system ICM2 by default assumes sRGB unless told otherwise. So everyone saves the bandwidth that the profile would use, if it had to be attached to all jpegs etc (it would often be bigger than the image). Since many scanners, printers, digicams use the sRGB standard, and most monitors approximate to sRGB, it makes sense for most people to use it. Those on this list are clearly not 'most people', and many use custom profiles to squeeze the last bit of color out of their printer/ink/paper combination. But I doubt very much if 'most people' could tell the difference between an sRGB managed print, and a custom profile print. Bob Frost. ----- Original Message ----- From: "Bernie Epstein" <firstname.lastname@example.org> > Ray: > > You may find the following excerpt helpful. It's from a review of the Nikon 4000 > ED by Steve Hoffman at http://www.sphoto.com/techinfo/scs4000.html#Color. > > Bernie Epstein > > sRGB is still a rather new standard and some folks are not comfortable with it. > The following information is a quote and was taken from Adobe Photoshop's Color > Management technical support page. The link to this information is no longer > available. However, I'll print the information and hope that Adobe won't get > after me..;^) > > "sRGB is a standard promoted primarily by Hewlett-Packard and Microsoft. It > reflects the standards for HDTV broadcast (Gamma=2.2, Primaries=HDTV, White > Point=6500K). > > One of the reasons to use sRGB is that Hewlett-Packard is promoting a workflow > in which hardware devices such as scanners, non-PostScript printers, and Web > browsers will be optimized for RGB data in the sRGB space. If you are using such > devices, sRGB will provide the simplest workflow. > > sRGB reflects the characteristics of the average PC monitor. If you are > producing graphics to be viewed on the Web, sRGB will reflect what most viewers > see. The downside to sRGB is that it has a limited color gamut and cannot > represent as many colors as other color spaces. It is not a good choice for > professional prepress users since too much of the CMYK gamut lies outside of it. > > Microsoft and Hewlett-Packard think sRGB solves a lot of problems with > un-calibrated RGB. Personally, I find sRGB perfect for web imaging and printing > on my PhotoSmart and Canon S800 photo printers. In fact both of these printers > are optimized for sRGB input. I've been told that the Epson photo printers are > also optimized for sRGB. It is best to know in advance the color space your > intended output device is optimized for before you prepare you image for > scanning. Adobe's Photoshop will allow you the option of opening an image in > your working color space space and profile while temporarily discarding the > embedded profile. You can also 'convert to profile' after your image is created. > This Photoshop feature allows you to scan and save in fairly wide color gamuts > like Adobe RGB 1998 or Bruce RGB and convert it later to any number of other > equal or lesser gamut color spaces or profiles. - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.