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187
Selecting the AF Operation
AF-Assist Beam
The AF-assist beam may re repeatedly when you press the shutter button
halfway under low light or in similar conditions, to make autofocusing easier.
o
The AF-assist beam does not re when [
z
: AF operation] is set to [Servo
AF].
o
The AF-assist beam does not re when Touch AF is used (when [
z
: Touch
Shutter] is set to [Disable]).
o
When you are using an external ash unit, either the camera or the ash unit
res an AF-assist beam as needed. However, only the camera’s AF-assist
beam res when you are using a Speedlite 90EX, Macro Ring Lite, or Macro
Twin Lite.
o
A small series of ashes is red even if you set the external ash’s AF-assist
beam emission method in the Personal Functions to infrared AF-assist beam
ring. To disable AF-assist beam ring, set [
z
: AF-assist beam ring] to
[Disable] (
=
201).
o
Focus range with the AF-assist beam is generally no more than 3.5 m/11.5 ft.
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