Hi all!

Does anybody know what is the settings for Canon 10-22 lens at 22 mm for Canon 400D and Canon 7D (also for 10mm)?
I know, there are several methods to compute this setting. But if you already have this settings - could you share it?

It seems that it is impossible to shoot nadir with NN3 and Canon 10-22. Using it at 10mm, the nadir is not necessary - the fov is wide enough.
It is necessary to shoot nadir at 22mm?