ok i will try an explain as best i can...
im doing a 3d anim for a jewelry company, the gem in question reflects colors differently from different angles..
They want me to use a high res photo for the texture of the gem. So my problem comes here: how do i make it so as the camera moves the colors the gem reflects change with the angle???? i have to keep in mind that the colors reflected have to be the same as the colors of the gem.......