I had the Mark I, but sold it a couple of days ago for 1500 and now am planning to upgrade to the Mark II. I currently own the 10-22mm, 24-105mm, and the 100mm is macro.


My big reason to upgrade is that with the 2X extender (for high school sports andwildlife)the image seems to be better than the Mark I and compares favorably to the 100-400mm (less so but still comparable to the 400mm f/5.6). Also, the new lens with the improved IS, in my opinion, obviates the need for the 85mm f/1.8 for low light photography.


Ifeel this 4 lens combination is more than sufficient for my needs.