Quote Originally Posted by Slixtiesix View Post
Q.G. who is not around here anymore said that the optical difference between the 80mm and 100mm is narrow in real life if both lenses are stopped down.
My experience exactly. I've owned both the 80 and the 100, and finally got rid of the 100 for FOV considerations. The difference in sharpness is definitely visible in real life shooting, but the 80 resolving slightly less detail was never an issue to me.

I never saw any difference in 'micro-contrast', '3D-magic' or any of that sort of thing.

One caveat: the 100 has less distortion than the 80, but again, this is a minor issue (to me).

The 80 is a very well corrected lens. My advice would be to only get the 100 if you prefer the FOV or care about the (lack of) distortion.