Shooting Mode - Canon EOS 5D Mark III Instruction Manual

Nomenclature
Mode Dial
Turn the Mode Dial while holding down the Mode Dial center (Mode Dial
lock release button).
Custom shooting modes
You can register the shooting mode (d/s/f/a/F), AF mode,
menu settings, etc., to w, x, y Mode Dial settings and shoot
(p.338).
24
F : Bulb (p.174)
a : Manual exposure (p.168)
f : Aperture-priority AE (p.166)
s : Shutter-priority AE (p.164)
d : Program AE (p.162)
A :Scene Intelligent Auto (p.64)