I’ve applied my normal to my model in 3ds max, most of which is symmetrical so most of it is mirrored.
When using a skylight it doesn’t create such an ugly seam but gives me more problems when rendering like unnecessary hard edges. I messed around with tangent vs worldspace settings, i know I’ve had this problem with normals before i just cant remember how i fixed it.
Quick render:
http://maven-studios.com/normalProblem_001.jpg
Half projects fine, other half projects ugly as sin. Before I really get into texturing and clean up the normal map I wanted to figure this out.
Raw Normals: