Yep you got it. I think there are some other reasons people have for unwrapping the low, some Zbrush specific functions or some such silliness. http://home.wanadoo.nl/r.j.o/skyraider/e-light.htm The custom light dome I use is very similar to this script. I had to build it myself because the elight dome is not for…
Yep looks like there isn't much to capture, you could try exaggerating the details on the high, maybe a push modifier would create some higher highs and lower lows... There are a few things to try. If you're using polyboost or Max2010 you can render out a cavity map. Render > Render Surface Map. You have a few different…