Canon EOS-1D X Mark III Advanced User's Manual page 29

(1) < > Flash exposure compensation/
Metering mode selection button
(2) < > Shooting mode selection button
(3) <
AF operation selection button
(4) < > AEB setting button
(5) System extension mounting hole
(6) Terminal cover
(7) System extension terminal
(8) < > External microphone IN/
Line input terminal
(9) < > Headphone terminal
(10) < > Remote control terminal (N3 type)
(11) Top LCD panel
(12) < > Live View shooting/
< > Movie shooting switch
< > Start/Stop button
(13) < > AF start button/
Smart controller
(14) < > AE lock button
(15) < > AF point selection button
(16) Eyepiece shutter lever
(17) Viewfinder eyepiece
(18) Dioptric adjustment knob
(19) < > Ethernet RJ-45 terminal
(20) < > Digital terminal
(21) <
(22) < > PC terminal
> Drive mode/
> HDMI mini OUT terminal
29