My problem is which one?
I've got the 24-70 and even on a 1DS body it's not wide enough if I am lucky and get a pit lane hot pass.
Looks like I don't need to be much wider for the pit stops see below.
But for the grid walk, wider would definitely be better (as an option).
So from your experience folks, what's the best wider zoom?
Is there one that is rectilinear, or nearly so?