I was going to guess the 1.8
but I think it could also be a 50.
edit: forgot the camera, I'm guessing 5D3 but that's more by your posts than by this pic
« Last Edit: February 21, 2013, 11:01:28 AM by Rat »
5DIII, 17-40, 24-105, 70-200/4IS, 50/1.8II, 85/1.8 and, hoping to learn, a Yongnuo YN568EX.