Canon EOS M2 Instruction Manual page 28

Nomenclature
Lens
EF-M Lens
(Lens with no focus mode switch and no Image Stabilizer switch.)
Hood mount
Filter thread
(front of lens)
28
Focusing ring
(p.108, 120)
Lens mount index (p.44)
Zoom ring (p.45)
Zoom position index (p.45)
Contacts (p.22)