That's the Sigma 18-35 f/1.8, which is probably as close to an optically perfect lens as you can get. It's at 18mm, so you can see what a great hall Boettcher is. There are no bad seats and nothing is very far from the stage. Photos I post on HTF always come out overly saturated. I don't know why, but I guess I should make a habit of desaturating them a bit. The D500 has a very clean image. Less noise than the D7100, but I'm guessing once the D7300 comes out it will be the same. This is at ISO 800.