(If this is maintained, a simple "Software - Orienation" list would make life easier. Also, a Wiki Page might make more sense..) AFAIK, xNormals uses the same basis as Max; if you're saying Max is +X/-Y, then xNormals is the same thing. I believe the Photoshop plugin defaults to the +X/+Y. So,Max : +X, -Y Maya: +X, +Y…