Hello,
I'm trying to get some objects on a pure white support for a customer...
As i know albedo / diffuse would never go above rgb 240-242, i'm using a shadowCatcher material so i can save png rgba files, then photoshop let me put a pure white under it, and i get shadows onto it...
Problem is that the "for compositing" alpha stays grainy, even at 100 passes...
Im using an HDRI for main light, so i can't really raise the subdivisions...
Any help would be usefull, thanks.