CONS: huge, heavy, manual focus, stiff focus ring, no electronics PROS: bright, razor sharp wide open For me, the pros easily outweight the cons. For less than $500 brand new, I think you've got yourself a fantastic indoor event (e.g. school gym) prime that situates itself admirably among stuff like the 40-150/2.8, 50-200/2.8-3.5, and 150/2.0. This and a 75/1.8 do it all for me. I might end up being less-inclined to complain about the focus ring being so stiff, as it can take peaking, magnification, and/or luck to nail a motion shot at 2.0 with this. With this length, the plane can be pretty thin, but the usability of it while remaining bright is a point for MFT.