It has never bothered me on any of my cameras. Canon F-1/FTb and Nikon F are what I have. I have used it quite a bit on the F-1 in lieu of a cable release, along with mirror lockup. In fact, I find its location and design on the Canons to be very smart. Certainly ten times better than the Nikon F, which will cannot lock in manual aperture/DOF mode, and which has a mirror lockup that confused me to this day. (I just don't use it.) Normally I don't like combined multi-function controls, but in this case it is well designed and easy to use all the functions either together or separately. It is not anywhere near the "grip area" for me, as the one fellow above stated. I have to reach in quite a ways to hit the D of F preview.