I don't have any normal maps. I could make one but it would be difficult as I don't have any tools that do that easily.

I have asked repeatedly (this makes the seventh time) in this forum for anybody to make a pair of matching bump and normal maps, and show me renders where the normal maps are better.

Every tool that I know of that makes normal maps, does so by first starting from a bump map, and a user-specified depth. In other words, the normal map is completely generated from a bump map and a specified desired depth, which means that the bump map is more general, while the normal map is baked permanently at that depth.

The renders would be the same, but with the bump map you could change the depth on the fly direclty in Poser. With only a normal map, you'd have to go to the other tool and specify a new depth to create a new baked normal map. Poser is doing what those tools do, generating internally a normal map from a bump map and a desired depth.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)