Hi,
I create half a character model in Maya, then create UV maps for this half model. Then duplicate and 'scale -1' to create the other half of the model. Now I apply a bump map: on one half of the model the white of a bumpmap will raise, but on the others half the black of the bumpmap will raise. So on the mirrored side of the model this effect of the bumpmap is reversed. All face normals are conformed, i.e. they all point outwards.
Surely there must be a solution for this problem. Though I'm not in the habit of mirroring entire chracter models, I do frequently mirror the arms and legs in order to save texture space.
Any advice is much appreciated,
Tom