Digital BW, The Print

This is all good except that in order to make the correct RGB input profile that can be used with SP, you have to simulate a "null" input profile to CMYK conversion (untagged gray --> CMYK) when printing the Grayscale targets and the only way to start that (and be sure of no complications in my opinion) is to do it in Photoshop. Finding/researching a similar "spacer" RGB input profile (that actually works with SP) is just a waste of time as you would only be doing the gray->cmyk conversion once. So maybe doing a Perceptual conversion in PS would work best here because that is what you'll want to be doing inside StudioPrint when you're ripping live prints. I don't see much difference between Percep in PS and Percep in SP.

This gets the ball rolling and then you can take that first "neutralize" RGB ICC you create from the first gray patch print and use that as input (if studioprint recognizes the CreateICC RGB profile. You might have to rename as .icm.) After that you just replace the input profile with the next iterative one until you have the correct LaB values on your gray print (match).

Walker




On Apr 23, 2010, at 4:40 PM, tboleyyh wrote:

> exactly, then the problem remains how to do it on the fly with grayscale files... so, your options are-
> 
> 1) preconvert to SP CMYK, as this suggests, even for image printing from here on out.
> 
> 2) import gray as rgb, then proceed normally, but you should have done that with your chart as well, this will auto assign SP's "default" RGB, which is fine, but the entire process, charts, images and all, from here on out need to be done that way.
> 
> 3) Preconvert grayscales to rgb of your choice.
> 
> 4) import gray as RGB, then assign (in SP) an RGB space of same gamma as your grayscale... this would be preferable... 
> 
> actually any of these need to be done consistantly from charts to actual use for any of it to make any sense...
> Hope I'm not confusing matters.
> Tyler
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Walker Blackwell <forums@...> wrote:
> >
> > Solution for printing grayscale patch (tune) through SP CMYK environment.
> > 
> > Grab the SP ICC profile and put it into your OS. Convert the 51 step patch to it. Send print through SP.
> > 
> > This should do it.
> > 
> > Walker
> >
> 
> 

Walker Blackwell
802.821.4451
www.walkerblackwell.com
aim: greendirtblues
wblackwell@...



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