An IS Question- position 1 or 2?

[scottkinfw]

I would appreciate input please

I am going on a hot air balloon ride and intend to use my 5DIII in video mode, likely with 70-200 f/2.8 IS II. I will likely use a bean bag. Obviously, the balloon will be moving, and I will be shooting moving wildlife. So the question is: Which IS position should I use for best results? Would it be different for stills?

Thanks.

sek

 

[charlesa]

Position 1, 2 is for panning and horizontal movement mostly.