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I have been using Blender for a while, however up until recently I have only used Blender Render. I started to get interested in Cycles, and somehow it worked fine like Blender Render, up until i noticed a problem when I used a normal map. It took me some time, but i was able to narrow the problem down. Though now i hit a wall and don't know what to do now.

Here is an example:
Rendering Example

This scene has no light source other than the background set at white and strength at 1. If i add a light source it doesn't change the problem at all. The blue cube is just for an example of a normal Diffuse with nothing whatsoever special about it. No normals in none of the images. The gray objects have an Anisotropic(same problem with glossy material) material on it. Nodes can be seen here:
enter image description here

Top left are the gray objects with normals, the jacket with the ball behind it.

The other three do have a Normals setting on it. And here comes the problem.

As you can see, if you view it from behind(top right) it looks fine, the details of the Normals appear as they should, everything is dandy. Bottom left you can see some dark shadows appearing. And bottom right is completely black. And the crazy part is, this happens when there is a lightsource as well(i have tried variations with no "background" light source as well)! I could add a lightsource with the strength of 10000 right in front of it, it would still appear pitch black in the bottom right perspective

I've already tried inverting the faces, checking to see if the vertices are correct(thus the ball in the back), with different normal textures etc. same effects happens all the time.

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    $\begingroup$ Related - blender.stackexchange.com/questions/16443/…. Don't plug image with normal map directly into Normal input socket rather than use Normal Map node (if you really have normal map, i.e. image in blueish hues). The blackness is most likely because of too high and wrong effect of normal map. $\endgroup$ – Mr Zak Mar 16 '16 at 16:11
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Try including a normal map node between the image texture and the normal input of the anisotropic BDSF. enter image description here Also include a texture coordinate node to tell blender how to wrap the texture onto a mesh. enter image description here

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  • $\begingroup$ The Normal Map solved it, the Texture Coordinate didn't seem to do anything though, as it was already binding to the UV $\endgroup$ – Kibate Mar 17 '16 at 0:30
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    $\begingroup$ In addition to the previous answer, Image Texture should be Non-Color Data. $\endgroup$ – zevarito Aug 28 '18 at 3:51

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