Digital BW, The Print

> If that is what you are saying, I don't think it would work with Paul
> Roark's method, as that requires you to attach an RGB curve set to the file
> before printing. If the conversion isn't allowed to occur until the file
> reaches the driver you won't get the opportunity to properly apply the
> curves. So the different gamma spaces are a good idea, but you still need to
> Convert To Profile to apply them when using Paul's method.
> 
> Does that sound right?
> 
> Todd

Ahh, didn't realize there was a required RGB curve in there - if you have to
use an RGB curve in RGB space then it wouldn't work directly from grayscale
to the printer.  However, as you note, it will still work as a way to
calibrate the monitor to the printer when used on the RGB file on its way to
the printer. In fact, short of a real RGB profile, I think it is the only
way to do a simple gamma adjustment on an RGB file in the print dialog
printer space drop down.

However, see my other posts on converting from grayscale to RGB then doing
curves adjustments in RGB.  To avoid histogram gaps either make sure your
destination  RGB space is an identical gamma as your source grayscale space
*or* first convert to multichannel, make two more copies of the original
channel (so you have a total of three) *then* convert to RGB.  As this extra
step prevents any possibility of gray to RGB conversion histogram gaps and
consequent posterization I rather recommend it as a standard practice.

Dan