Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 27)

(1) < > White balance selection button
(2) < > LCD panel illumination button
(3) GPS antenna
(4) Hot shoe
(5) Flash sync contacts
(6) Eyecup
(7) Screen
(8) < > Quick Control button
(9) < > Vertical-grip
AF start button/
Vertical-grip smart controller
(10) Speaker
(11) < > Exposure compensation/
Aperture value setting button
(12) < > AF area selection/
AF method selection/
Multi-function/
FE lock/
Multi-spot metering button
(13) < > ISO speed setting/Time display button
(14) < > Main dial
(15) Strap mount
(16) < > Multi-controller
(17) < > Setting button
(18) < > Quick control dial
(19) < > Vertical-grip Multi-controller
(20) < > Vertical-grip AE lock button
(21) < > Vertical-grip AF point selection button
27