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JOHN CARSTARPHEN: Hi, this is John Carstarphen for Expert Village. The pros of using a texture
map, a photographic texture map are that you can render much faster, because it just has
to simply render the photograph and that's always easier on the software. Of course,
one of the downsides of using a photographic texture map is that it's not quite realistic.
I mean, you can add a bump map to this, which we have done, and we can even increase the
bump size, the bump scale to, say, 80%, which will help, but it won't help a lot. And at
this angle, you don't even see the effect of the bump. Bump mapping is really only effective
if you photographed the object, the texture map with the bump map at certain angles and
under certain lighting conditions. So bump maps are great maps to use in conjunction
with photographic texture maps, but they don't always show up unless you--you have to be
very careful about where you place your 3D camera to get an effective use of the bump
mapping.