Digital BW, The Print

In a message dated 1/21/07 12:32:04 AM, e.neilsen2@... writes:


> David, You miss the point. You said, "That's really not your best test
> image. Use a stock test image thats been
> desaturates so R=G=B" . I see no where here an implication of anything other
> than simple desaturation.
> 
Any test image in RGB needs to be a desaturated image, or it will contain 
intentional color casts; as R does not equal G equal B. If you look at the 
ColorVision Black and White test image, all the photos it contains were converted 
via my own preferred method, at high bit. The final test image is 8 bits per 
channel, in RGB. If you run the "desaturate" function on it, just to be sure, it 
won't change anything, its already neutral. If you take any of its three 
channels and make them a standalone grayscale file, they will print just like the 
original RGB version. Thats a desaturated RGB image, as is any other image 
which is in RGB, and does not change when the desaturate command it run on it, or 
when its stripped to a grayscale file. Its this definition of a desaturated 
RGB image (or my wording in describing one) thats bothering you.

C. David Tobie
Product Technology Manager
ColorVision Business Division
DataColor Inc.
CDTobie@...
www.colorvision.com


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