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[Max] Corona Goodies - User Contributions / Re: AgX in Corona
« on: 2024-04-30, 11:15:36 »
ok, so at least we know that it used to work as expected for a brief moment:
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Wait, so for any LUTs from outside Corona install we need either the string option or a gamma operator @0.45 before the LUT? I remember trying some LUTs from other sources but gave up thinking they were not the right type.
But when importing exr's from corona to fusion, there is a extra gamma applied (1.2?) because the image in fusion is much darker than in VFB. And then you need to specify the float gamma thing to have the same result in vfb and fusion ?
From my point of view, the Agx color management is quite seducing. Nice highlight falloff, colors OK, i like the desaturated aspect as will on high values.
I most of the time use your AgX matrix (thanks) + custom 1D curve made with Lutcalc, and it works quite well.
I also tend to have little photoshop editing at the end, so i like to have my colors right in the render, and i find it very hard to finetune them in the VFB.
So i thought of finding the nice color setups with a lut in Resolve, and then bake them with AgX in one single LUT.
if "avoiding user mistakes" is THE strategy - was anything done about Tone Curve after this thread:
https://forum.corona-renderer.com/index.php?topic=40616.0
an updated tooltip or something?
No
It would be nice to have your resolve/fusion workflow to see how you manage to create those LUT's... ;)
Between the -1.2 string, the "log" option in the vfb lut, the AgX ocio and DCTL (that i managed to install in resolve+fusion), the custom color correct node, well...it gets a little confused ;)
So when i color edit a 32bit image with Agx and dctl, i have trouble exporting to a lut to have the same result in the corona vfb
Hello Piotrus,
what do you mean by "float colormap.additionalGamma = -1.2" ?
do you type this in maxcript listener ? (when i type this, i got a bunch of errors)
thanks!
The thing I find different about CoronaPhysicalMtl and energy conservation is actually too much energy reflected at low Base Color values like 0.02-0.04.