I've been trying out the HDR feature in CS2, and have figured out how to get a decent-looking final 8-bit or 16-bit image out of the conversion from 32-bit (Local Adaptation with tone curve, with the tone curve black point and white point set at the ends of the interesting part of the histogram, with a few points in between behaving more or less like a normal Curves command), but am still unclear on exactly what the Radius and Threshold sliders do under Local Adaptation. They certainly change things (especially the Radius slider), but has anyone figured out exactly what they're doing and what general settings work best for most high-dynamic-range landscapes? I understand from the manual that it has something to do with "local brightness regions", but can anyone explain it in more detail?
Lisa