I have a problem. If I export the model with blender materials in to .obj format, and then import it back,all the materials persist, but are much darker then the original exported ones.
(left - original, right - import)
The thing is that there is a transparency property added, and all specular changed to black, as well as base colour darkened a bit. Also mirror property is set to 100%, and mirror colour to black.
What is wrong with this? Any way to fix it?