Thanks Bruce. I'll pass that along. I actually use two OM2n's for my own aerial work: one with a 50mm and one with a 70-200 zoom lens. The problem is the apperture priority auto. Flying as passenger this is no problem for me, I just ride the apperture to keep 1/1000th sec, but my colleaugue doesn't feel up to doing that while flying the plane, so wants shutter priority.

David.