Applying Detail Albedo - I don't understand the result.

Hello everyone.

Recently I decided to play around with Unity to see how it works. Right now, I was playing around with light to see if I can get some cool effects.

Everything was fine until I decided to check out what kind of effect would I get if I applied my normal map to Detail Albedo in material. The result looked pretty nice but it came with an interesting behavior - light was no longer applied uniformly on my sprite - there is a difference in how it applies to the top and bottom of my sprite.

Here is how it looks: https://puu.sh/uYUWs/a3ec668128.png

I think I don't really understand this feature - I tried looking it up in google, but what I found did not make me understand its behavior. Can anyone explain?

Thanks.

 

are you sure it's not just because you applied that texture as the normalmap? (strange normals, sometimes with an anisotropic like effect are often the result of using textures not meant as normalmaps)