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3 Customizing AF FunctionsN
Enables or disables the EOS-dedicated Speedlite’s AF-assist beam.
ON: Enable
The external Speedlite emits the AF-
assist beam when necessary.
OFF: Disable
The external Speedlite will not emit the
AF-assist beam. This prevents the AF-
assist beam from disturbing others.
IR: IR AF assist beam only
Among external Speedlites, only models with an infrared AF-assist
beam will be able to emit the beam. Set this if you do not want the AF
assist to be emitted as small flashes.
You can set the AF operation characteristics and shutter-release timing
for One-Shot AF.
: Focus priority
The picture is not taken until focus is
achieved. Effective when you want to
achieve focus before capturing the shot.
: Release priority
Priority is given to taking the picture
instead of achieving focus. This gives
priority to getting the shot rather than
achieving correct focus.
Note that the picture will be taken
even if focus has not been achieved.
AF-assist beam firing
One-Shot AF release priority
If the external Speedlite’s Custom Function [AF-assist beam firing] is set to
[Disable], this function’s setting will be overridden and the AF-assist beam
will not be emitted.