However, it seems that Sigma does not document all changes.I really like so far how Sigma listens and responds to user issues by addressing them in software updates
I reported a suggestion earlier about a recipe to get detail without brittle sharpening: reduce Sharpen to -1 while setting Chroma NR to 1 (of 1..5) and Luminance NR to 2. However, processing a few shots with SPP 5.5.1, I findSharpening at -1 is soft. Sharpening 0 now seems a good starting point. If this is correct, SPP "best practices" must be tagged by the SPP version number!