Canon EOS 5D Mark II Instruction Manual page 21

EF24-105mm f/4L IS USM lens
Focus mode switch (p.31)
Hood mount
(p.32)
77 mm filter thread
(front of lens)
Focusing ring (p.84,122)
Image Stabilizer switch (p.33)
Distance scale
Infrared index
Zoom ring (p.32)
Zoom position index
(p.32)
Contacts (p.13)
Lens mount index (p.31)
Nomenclature
21