I just came across moire patterns in a photo of a suit coat at a wedding. I thought I had read somewhere in your help file that there was an ImageEn setting that solved or reduced this problem, but I couldn't find it. I discovered that one of my programs had the problem and one didn't, so that led me to ImageEnViewCompare.ZoomFilter := rfFastLinear; My program with moire had rfNone.
I then checked your zoom filter demo program. rfNone is very bad for moire. rfWICNearestNeighbor rfWICCubic rfWICLinear These are all poor for moire. I wonder if that is worth documenting in the help file?