I'm going to be shooting a fashion show tomorrow and plan to use my 70-200 f/2.8 IS USM (I) as my main lens, mounted on a monopod to reduce blur. I don't usually shoot on a monopod, and also don't usually shoot moving subjects.
Question: for optimal sharpness, should I have IS on or off? And if on, stabilization mode 1 or 2? Thanks for any replies.