I've been doing high resolution 2D and 3D Imaging of Top 100 and lesser Lincoln Wheat Cent RPMs and have completed a nice group for folks to view. Here is the link to the folder on photobucket: http://s943.photobucket.com/user/rparkhurst/library/Top 100 Lincolns in 3D?sort=3&page=1
I use a Canon T2i on a bellows with a 10x microscope objective. I've also done these with 5x objective but any lower power and the 3D effect is reduced. Coins are pretty flat...