Stephen,

I made a lot of absolute statements? Really?

I said that editing a CMYK file to adjust TIL is a recipe for disaster.

My questions about operating a press weren't rhetorical. As opposed to all those supposed ham-fisted printers that designers like to characterize as clueless because they don't know how to profile a press, I've had a bit of experience in that field, and I'd be glad to discuss it if you would like.

I know what it is like to try to force a Speedmaster to match the color that a set of separations have produced on proofing material(s) that has a relationship to the press' characteristics under a very narrow set of conditions, none of which match the ones the files adhere to.

I've dealt with jobs that had files that came in from multiple sources, some still RGB (with no profiles) some CMYK that had been converted by God knows what process. I've had all the fruitless conversations with designers, trying to explain color theory and color management to them, only to be told their files were "perfect." I've experienced the frustration of trying to get designers to use MY press profiles for jobs that were going to run on MY presses only to be informed that other, INDUSTRY STANDARD, profiles had already been applied.

And, yes, I've also had all the conversations with the ones who claimed that all that had to be done to get their sheet fed prepared jobs to run on the web press and vice-versa, was for us to make some "adjustments" to the files.

I and my graphics department, all of whom were very familiar with our press characteristics, have edited Mystery Meat files because we had no choice.

I've also enjoyed the relative stress-free atmosphere of an environment in which we produce and control every file that goes to press in our completely color-managed work flow.

So instead of imagining that YOUR "Schwartz" is bigger by claiming that I "don't know how to do something," how about actually answering my question about how to edit a CMYK file so that TIL is changed from one specific value to another specified level, AND controlling other characteristics of the file so the image looks like the proof the customer demands it match? I'm just a dumb printer. Please. Educate me.

Rich

Olivier_Buisman

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To much ink