Canon EOS 5D Instruction Manual page 18

Nomenclature
Mode Dial
: Camera user setting (p.148)
: Bulb (p.96)
: Manual exposure (p.90)
: Aperture-priority AE (p.88)
: Shutter-priority AE (p.86)
: Program AE (p.84)
: Full Auto (p.46)
Battery Charger CG-580
This is a battery pack charger. (p.22)
Battery pack slot
Red lamp
18