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QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Message

Conversion from Gray Gamma 1.8 to 2.2

2014-02-28 by <luciano@...>

I printed my first tablet, contact printed it, and while I was checking the results, I noticed that the gray percentages in the Photoshop file were off. I opened the original file (the step tablet used by Ron Reeder) which has a Gray Gamma 1.8 profile attached (I guess this was done as a workaround to print without Color Management but now with Print Tool is not necessary any longer).

I had converted (not assigned) the color profile of this file to Gray Gamma 2.2 and this changed the gray percentages.
I am not very familiar with Gray Gamma but I always though that the profile conversion should not change the values in the file.

So my question is: can I just assign Gray Gamma 2.2 to this file?
I tried and it did not change the gray percentages, but I am not sure if something else, less evident, will come up later on.
Thanks,
Luciano

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