Yongnuo YN-622C User Manual

AF Assist Beam Emitter
When using AF under low-light, the
built-in AF-assist beam emitter of the
transmitter will be emitted automatically
to make it easier to autofocus, and the
flash on the transmitter which support AF
assist beam emitter function can also be
emitted at the same time.
References
※ It needs using single autofocus for the lens.
※ It needs enabled the AF assist beam function of camera
(flash) by custom functions setting. Can also disable this
function by custom functions setting(C.Fn8).
※ Both the receiver and the off-camera flash on the receiver
will not be emitted.
Feedback Function of the AF Assist Beam Emitter
24
※ Only when the flash which supports assist beam emitter
function is set in the receiver and the assist beam emitter is
available, can this function be used.
※ Install the receiver on the camera and set the assist beam
firing as disable via external flash custom function setting
camera menu to disable this function(sets will be saved).
※ If parameter which the flash doesn’t support had been set
(such as hi-speed sync), this function will be abnormal.
When the off-camera setting
which is consistent with the
camera’s menu, the AF assist
beam emitter of the receiver will
blink twice to show that the
change is successfully.

Yongnuo YN-622C Specifications

Power

battery type	2x AA batteries (1.5v Alkaline or 1.2v NiMH)
standby time	60 hours
max safe trigger voltage on hot-shoe centre pin	6 volts

Connectors

canon hot foot	with locking ring and pin
canon hot shoe	for mounting hot-shoe flash
pc-sync screwlock socket	sync out only

Weight and Dimensions

dimensions	90 x 53 x 25mm (39mm incl. hot-foot)
weight	79gm without batteries