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[Max] General Discussion / Re: Coronas dynamic range
« on: 2018-05-22, 22:10:32 »
Hi guys, i'm really courious about the theory behind corona color mapping, my core focus is try to simulate as much as possible a real dslr camera behaviuor and for do that the first step was rebuild my own camera LUT using 3DL and a colorchecker.
The first thing i noticed was that, the curve extracted from my canon, compress a bit the highlights. I tried to use that LUT inside corona but it seems that doesn't compress well as the highlight compression value in the vfb.
I decided to modify that LUT (removing the shoulder from the curve to avoid the highlight compression) and using a value of 2 in the vfb highlight compression.
My questions are:
Does the highlight compression inside the LUT file works in 32 bit the same way as the higlight compression value in the vfb?
Is the theory behind highlight compress value inspired to a real camera (and if yes, there's a suggested range value?) or is just a generic value not linked in any way to reality?
Thanks guys
The first thing i noticed was that, the curve extracted from my canon, compress a bit the highlights. I tried to use that LUT inside corona but it seems that doesn't compress well as the highlight compression value in the vfb.
I decided to modify that LUT (removing the shoulder from the curve to avoid the highlight compression) and using a value of 2 in the vfb highlight compression.
My questions are:
Does the highlight compression inside the LUT file works in 32 bit the same way as the higlight compression value in the vfb?
Is the theory behind highlight compress value inspired to a real camera (and if yes, there's a suggested range value?) or is just a generic value not linked in any way to reality?
Thanks guys