Normal mapping not working / not clear

V-Ray V-Ray for Rhino Issues
1

I recently acquired some excellent 3D people from https://secure.axyz-design.com/ These are awesome and the models come with both a diffuse & normal map, which is a (newer) kind of bump map. However, I cannot find anything in the V-Ray documentation on how best to apply these normal maps. There are six (6!) different ways, so I spent some time experimenting. A few options looks good, but I prefer to use the proper method. See attached image.

Any suggestions?

Normal mapping question.jpg
Normal mapping question.jpg637×785 186 KB

2

Here are the seven options from the bump map pull-down.

1. Bump
2. Normal Map (Tangent space)
3. Normal Map (Object space)
4. Normal Map (Camera space)
5. Normal Map (World space)
6. Bump Map (Local space)
7. Explicit normals

3

Check this out:

http://www.surlybird.com/tutorials/TangentSpace/