Originally posted by disco_owner Looks like after he removed the rainbow pattern from the Fabric there is still a wavy pattern left on Fabric , is that stil Moire residue ?
Yes, those wavy things are called Moiré Eels...
Dude should've used the High Pass filter on his "luminance" layer to completely remove them, then mask it in on top to retain detail in the folds.
Waaay back when I retouched scanned medium-format film (for commercial fashion) we'd get moiré patterns from the film touching the scanning drum, so it wasn't based on the content of the image, but whether the scanner operator wasn't being careful... or not. Moiré can either be avoided or fixed later if you have the mad skillz!