I have an open doors helicopter ride over Manhattan coming up. I will have a Canon 70D with 70-200mm f/2.8 and a Sony a7r with me. I cannot change lenses during flight for obvious reasons.
Does anyone have thoughts on the widest lens for my a7r? I've heard that too wide and you get the copter rotors at the top of the frame. Some of my options are:
Canon 17-40mm f/4 (with Ommlite E-Mount adapter, thus no auto focus)
Sony FE 28mm prime f/2.0 (autofocus)
other?