C.fn Iii: Autofocus/Drive - Canon EOS REBEL SL1 Instruction Manual

3 Custom Function SettingsN

C.Fn III: Autofocus/Drive

C.Fn-4
Enables or disables the built-in flash's AF-assist beam or the EOS-
dedicated external Speedlite's AF-assist beam.
0: Enable
The AF-assist beam will be emitted when necessary.
1: Disable
The AF-assist beam is not emitted. This prevents the AF-assist
beam from disturbing others.
2: Enable external flash only
If an external Speedlite is attached, it will emit the AF-assist beam
when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the when necessary. The camera's built-in flash will not fire the AF- when necessary. The camera's built-in flash will not fire the
assist beam.
3: IR AF assist beam only
When an external Speedlite is When an external Speedlite is at When an external Speedlite is at When an external Speedlite is at When an external Speedlite is at When an external Speedlite is When an external Speedlite is attached, only with infrared AF- When an external Speedlite is attached, only with infrared AF-
assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam assist beam will be emitted. This prevents the AF-assist beam
from firing as a burst of small flashes. from firing as a burst of small flashes. from firing as a burst of small flashes. from firing as a burst of small flashes. from firing as a burst of small flashes. from firing as a burst of small flashes. from firing as a burst of small flashes. from firing as a burst of small flashes.
With an EX-series Speedlite equipped with an LED light, th With an EX-series Speedlite equipped with an LED light, the LED With an EX-series Speedlite equipped with an LED light, th With an EX-series Speedlite equipped with an LED light, th With an EX-series Speedlite equipped with an LED light, th With an EX-series Speedlite equipped with an LED light, th With an EX-series Speedlite equipped with an LED light, th With an EX-series Speedlite equipped with an LED light, th
light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist. light will not automatically turn on for AF-assist.
If the external Speedlite's [AF-assist beam firing] Custom Function is set If the external Speedlite's [ If the external Speedlite's
to [Disable], this function's setting will be overridden and the AF-assist ], this function's setting will ], this function's setting will
beam will not be emitted. beam will not be emitted. beam will not be emitted.
C.Fn-5
0: Disable
1: Enable
Prevents mechanical vibrations in the camera caused by the reflex
mirror action (mirror shock), which can disturb shooting with super
telephoto lenses or close-up (macro) shooting. See page 147 for
the mirror lockup procedure.
302
AF-assist beam firing
[AF-assist beam firing AF-assist beam firing AF-assist beam firing
Mirror lockup
it will emit the AF-assist beam it will emit the AF-assist beam
attached, only with infrared AF- attached, only with infrared AF- tached, only with infrared AF- tached, only with infrared AF- tached, only with infrared AF- tached, only with infrared AF-