Lightroom: Support for grayscale profiles for softproofing

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  • Updated 6 years ago
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Photoshop's ability to soft proof grayscale and alt-processes via QTR profiles works fantastically well. I'd love to see Lightroom 4 support QTR profiles for the same purpose.
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Scott Martin

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Posted 6 years ago

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Steve Sprengel, Champion

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Are they CMYK or RGB profiles? I think LR only supports RGB profiles.
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Scott Martin

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They are greyscale profiles that (as you can see) contain color information for the sake of soft proofing. I know LR only supports RGB profiles but I think it would be cool if it also supported these profiles!

On a related note I think it would be cool if Lightroom allowed us to print using the QTR driver. QTR is a popular choice among demanding printmakers and alt-process printmakers.
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Chris Cox

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What is a "QTR profile"?
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Scott Martin

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QuadToneRIP (QTR) creator Roy Harrington created a basic 21 step grayscale target and a little script called "QTR-Create-ICC". If we print the 21 step grayscale target on any process (Advanced B&W mode printing or make inkjet negatives and then alt-process prints (platinum palladium, carbon, van dykes, photogravure, etc)) we can measure this 21 step grayscale target and drop the measurement file on "QTR-Create-ICC" and it makes this absolutely fantastic 8K profile. When we print with the profile our prints or negatives print with perfect tonality and we can use them for soft proofing. Amazingly they softproof perfectly showing the hue of the process, the paper color, DMax, etc. It works amazingly well. This is popular among demanding fine art printmakers.

www.quadtonerip.com

I'll email you the profile I used for the screen grab above so you can play with that.
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Chris Cox

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OK, so it's just a tool used to build ICC profiles.
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Scott Martin

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Well, QTR is a RIP used for making exquisite prints and negatives. The "QTR-Create-ICC" script is a tool used to make ICC profiles for grayscale processes that can be used in Photoshop for soft-proofing. Would be nice if we could soft-proof in Lightroom as well!
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Scott Martin

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You and David should geek out on QTR - it's neat high-end printing stuff. I teach workshops on this sort of thing and love how people use it to make handcrafted prints.