Switch To Registered Af Point; Af Point Direct Selection; Metering Start K; Ae Lock - Canon EOS 5D Mark III Instruction Manual

82: Custom Controls

: Switch to registered AF point

During metering, when you press the button assigned to this function,
the camera will switch to the AF point registered on page 330.
*3: In step 3 on page 327, when you press the <B> button, you can select [Switch
only when btn is held] or [Switch each time btn is pressed].

: AF point direct selection

During metering, you can select an AF point directly with the <5> dial or
<9> without pressing the <S> button. With the <5> dial, you can select a
left or right AF point. (With Zone AF, the selected zone will change in a loop.)
*4: If you use <9> and press the <B> button in step 3 on page 327, you can press
<9> straight down to select [Switch to center AF point] or [Switch to registered
AF point].
: Metering start
When you press the shutter button halfway, only exposure metering is
performed.

: AE lock

When you press the button assigned to this function, you can lock the
exposure (AE lock) during the metering. Convenient when you want to
focus and meter the shot at different areas or when you want to take
multiple shots at the same exposure setting.

: AE lock (while button pressed)

The exposure will be locked (AE lock) while you press the shutter
button.
: AE lock (hold)
When you press the button assigned to this function, you can lock the exposure
(AE lock). The AE lock will be maintained until you press the button again.
Convenient when you want to focus and meter the shot at different areas or
when you want to take multiple shots at the same exposure setting.
If you assign [AE lock (while button pressed)] to the shutter button, any
buttons assigned to [AE lock] or [AE lock (hold)] will also work as [AE lock
(while button pressed)].
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