right.  i realize that, but that sounds like an indicator of the problem, not the problem itself.

so i have white in, and anti-correcting does nothing.  but even if i were working with a color, it wouldn't matter.  because the problem with the former GC and sRGB methods is that the anti-correcting doesn't affect the color of the light on the surface, but the correcting does.   again, this totally explains a lot of the problems i was having with my low-light, colored light image.  i couldn't figure out why i was losing so much saturation.

so, just guessing, but it sounds like the correct comparison would be to take your new technique and compare the other corrections/luminances?