why both bump and blue tiff?

Mistara

why use both?

lookin at all the textures files with Alexandra

 

ty

 

vwrangler

The blue TIFF is a normal map that works better for some details in Iray than does a bump map. I'm genuinely not sure that 3Delight even cares about normal maps all that much; I do know that the Amazing Skins shader can have some real issues with them, but that's just one shader.

Some texture sets don't have full bump maps for characters, but just a noise map that's tiled on every surface to provide skin grain details that might need some enhancement that the normal map alone can't provide, because it's doing something else. Almost any human textures that use the Anagenessis II shader, for example, have both a noise map and a normal map.

I've got an NSFW image of Scott 6 (... sort of) in my deviantart gallery's recent images that shows what normal maps can do. That said, one of the things Scott's normal map doesn't seem to do well is skin grain. He also didn't come with bump maps.

Fishtales

This is something I found useful.

https://www.pluralsight.com/blog/film-games/bump-normal-and-displacement-maps

MarkIsSleepy

Fishtales said:

This is something I found useful.

https://www.pluralsight.com/blog/film-games/bump-normal-and-displacement-maps

That's a nice link! Thanks for posting.

I've also read that in some cases you may need both a bump map and a normal map (assuming you are not using real displacement) because they do different things: the bump map doesn't contain angle information, so edges may all look like perfect right angles, and the normal map doesn't contain (directly at least) any height information so details may all appear to go the same distance in/out whether they are supposed to or not. I believe that if you have to pick one, the general rule is to go with the normal map.

jardine

thanks, Fishtales...that's a good article.  :)