Hi Ben,
thank you for your detailed answer.
I have now created a profile with -v -Zr -qm -as -u, and that worked, peak
error 5.25..., average error 2.14..., fine.
I have earlier used -am, the 'gamma' matrix was just ignorance/sloppy
terminology from my side.
In my first post, I did not mention the background for my question, so it's
here:
The -am option assumes a linear input. I read that the Sony a7r raws are
compressed and hence not linear, so I had to find something new. Concerning the
linearity of the Sony raws, I get conflicting information. But to be on the
safe side, I will no longer use the -am option.
New question: since the -am profile was linear all the way, I used it both as
an input and output profile. What can I do now to get a camera-own, linear
output profile?
WRT -Zr: Why do you think I should not want it? My thought is: Better have most
colors accurate, and some very few OOG colors pushed rather than all colors
pushed with (almost) no need.
Thanks again - Hening.
