Just curious, I see there is both a Carl Zeiss 35/2 and a 35/2.8. You can purchase both brand new for a rather good price, $800 for the 35/2.8 and $1000 for the 35/2. I like the idea of the smaller f/2.8 but would love the extra stop of light afforded by the f/2. I have heard that the f/2 intrudes into the viewfinder framing. It's a tough call.