07-04-2022, 09:44 PM
(07-04-2022, 05:54 PM)ajax Wrote:(07-02-2022, 09:13 PM)Ofnuts Wrote: ...Very helpful. Thank you.
This "precision" only applies on how the data is stored in layers. All computations are done in 32-bit FP, which means conversions happen before and after... unless you use 32-bit FP, which, not requiring conversions, can be a bit faster, too.
However, this does raise another question. When I elect to convert to 32 bit FP there is an option that allows for selecting either "Perceptual gamma" or "Linear light". If GIMP is making such conversions on all operations which of these might it be choosing? Or is there some reason for this option NOT applying? I'm afraid I do NOT understand the difference.
Gamma is only useful in 8-bit precision (or very moderately in 16-bit integer). Internally Gimp works in "linear light".