QTR-Quadtone RIP

That seems to have done it; though I would really love to understand why. As I understood the various work arounds for the missing "no color management" option, I thought that simply having consistency between the assigned profile and the "printed" profile was sufficient to trick the drivers into not doing any color mapping. I wonder if its really the different rendering intent that is making this work right... I may do some experimentation later.

You are correct, though, I could probably been happy just taking an existing profile and doing a new linearization curve for it. This, however, was less about getting a good print and more about teaching myself the process of building a profile.

thanks!

--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>
> The symptoms sure point to an unwanted color conversion happening somewhere.
> It sounds like you are doing the right thing but the OS X color
> management has been
> particularly hard to pin down version to version.   I need to go
> through more testing.
> 
> The one thing I can think that may be worth trying is to use sRGB
> rather than ProPhoto.
> (Its the internal default for lots in OSX).I'd also use Perceptual
> Intent and BPC checked on.
> Another variable (which shouldn't matter) is in Color Settings try
> sRGB as the RGB working space.
> 
> As a general comment: I'd read Amadou Diallo's workflow on the
> Download page.   You
> can probably do just fine re-linearizing an existing profile.   The
> profiles for photo papers
> especially are extremely similar.
> 
> Roy
>