Hi Godfrey,
How does this relationship between PhotoShop and operating system color
management work when ColorSynch Workflow is used with a Mac? I get excellent
results using ColorSynch with my Apple Cinema Display and Epson 2200, but I
don't really understand what's going on.
Paul
-------------- Original message ----------------------
From: Godfrey DiGiorgi <[EMAIL PROTECTED]>
> On Feb 10, 2006, at 8:51 AM, Lon Williamson wrote:
>
> > I still scan film, and the most color correction I have is
> > Adobe Gamma. My printers do not have any icc profiles for
> > specific paper/ink combinations, and my film scanner can scan
> > into a specified workspace but is not profiled.
> >
> > Windows 98 has, in the Printer control panel, the ability to
> > attach a profile to a printer. If that is done, is it necessary
> > in photoshop, when printing, to specify the same profile that you
> > attach to a printer if you DON'T specify "printer color management"?
> > What the heck happens if you do or don't?
>
> Color management with profiles for printer is pretty much a waste of
> time if you don't profile your monitor so that it is calibrated
> properly. Adobe Gamma can do a decent enough job for a lot of
> purposes, but it's not as good as a hardware colorimeter and
> calibration software. The latter leads to much more consistent results.
>
> Here's a basic color management plan:
>
> 1) calibrate your monitor
> 2) set up Photoshop's color management policies and rules to your
> preference.
> 3) color manage output to the printer
>
> The profile provides a translation of the color specifications in
> your image file, through LAB colorspace, to provide an accurate
> translation from screen rendering to printer rendering. It should
> only be applied once for print output, not twice.
> - You can tell Photoshop to apply a profile to your image and then
> tell the printer driver to turn all color management off, then
> Photoshop does the work.
> - OR you can tell Photoshop NOT to color manage the output to a
> printer and tell the print driver what kind of profile to use on the
> data.
>
> I don't run Windows, nor have I ever dealt with Win98 and color
> management. But a profile attached to a printer has to assume some
> baseline of paper/ink for the OS in general to apply through the
> system wide printing interface. Photoshop's need for color management
> policy generally goes well beyond what anything the OS is attempting
> to do. I don't know what version of Photoshop you're running ...
> color management control was expanded enormously around the time of
> Photoshop 6 and has gotten significantly more sophisticated in v7, CS
> and CS2 ... but I suspect it would be best to tell Photoshop to do
> the color management using the profile you have, tell the printer to
> do nothing at all other than print...
>
> Godfrey
>
