Settings that can be changed with Custom Functions
C.Fn-00: (Distance indicator display)
You can select meters or feet for the distance indicator display on the LCD panel.
- 0: m (Meters (m))
- 1: ft (Feet (ft))
- When the effective flash distance exceeds 18 m / 60 ft., the right end of the effective flash range on the LCD panel changes to .
C.Fn-01: (Auto power off)
When the Speedlite is not operated for approx. 90 seconds, the power turns off automatically to save energy. You can disable this function.
- 0: ON
- 1: OFF
C.Fn-02: (Modeling flash)
0: (Enable: Depth-of-field preview button)
Press the camera's depth-of-field preview button to fire the modeling flash.
1: (Enable: Test flash button)
Press the Speedlite's test flash button to fire the modeling flash.
2: (Enable with both buttons)
Press the camera's depth-of-field preview button or the Speedlite's test flash button to fire the modeling flash.
3: OFF (Disabled)
Disables the modeling flash.
C.Fn-03: (FEB auto cancel)
You can set whether or not to cancel FEB automatically after shooting three shots with FEB.
- 0: ON (Enabled)
- 1: OFF (Disabled)
C.Fn-04: (FEB sequence)
You can change the FEB shooting sequence. 0: Standard exposure, –: Decreased exposure (darker) and +: Increased exposure (brighter).
- 0: 0 → - → +
- 1: - → 0 → +
C.Fn-08: (AF-assist beam firing)
- 0: ON (Enabled)
1: OFF (Disabled)
This disables the emission of the AF-assist beam from the Speedlite.
C.Fn-10: (Receiver auto power off timer)
When set as a radio transmission / optical transmission wireless receiver unit, the time until auto power off takes effect can be changed. When the receiver unit goes into the auto power off mode, is displayed on the LCD panel. Set this function for each receiver unit.
- 0: 60 min (60 minutes)
- 1: 10 min (10 minutes)
C.Fn-11: (Receiver auto power off cancel)
In radio transmission / optical transmission wireless shooting, when you press the test flash button of the sender unit, you can turn on the receiver units that are in the auto power off status.
You can change the time for the receiver units in auto power off status to accept this function. Set this function for each receiver unit.
- 0: 8 h (within 8 hours)
- 1: 1 h (within 1 hour)
C.Fn-12: (Flash recycle with external power source)
0: (Flash unit and external power source)
Charges using both internal and external power sources.
1: (External power source only)
The internal power source is needed to control the Speedlite. By using an external power source for charging firing of the Speedlite, you can minimize the depletion of the internal power source.
C.Fn-13: (Flash exposure compensation setting)
- 0: (button + dial)
1: (Direct setting with dial)
You can turn directly to set the flash exposure compensation amount and flash output without selecting with the joystick.
C.Fn-18: (Modeling lamp lit)
You can select how to turn on the modeling lamp.
- 0: (button)
- 1: (press shutter button briefly twice)
- The button is valid even if it is set to 1.
- Although "Macro focusing lamp ON" appears in the camera menu screen, the setting that can be configured is "Modelling lamp ON".
- When the flash is used with the EOS D60 or EOS D30, it will not function correctly even if you briefly press the shutter button twice in a row. Turn the lamp ON / OFF with the button.
C.Fn-21: (Light distribution)
You can change the light distribution (flash coverage) characteristic of the flash relative to the shooting angle when the flash coverage is set to (automatic setting).
The optimum flash coverage for the shooting angle of view is set automatically.
1: (Guide number priority)
Although the periphery of the picture is slightly darker than the 0 setting, this is effective when you want to give priority to the flash output. The flash coverage is set automatically to a slightly more telephoto position than the actual shooting angle of view. The display changes to .
2: (Light distribution priority)
Although the possible flash photography distance becomes slightly shorter than the 0 setting, this is effective when you want to minimize light fall off at the periphery of the picture. The flash coverage is set automatically to a slightly wider position than the actual shooting angle of view. The display changes to .
C.Fn-22: (LCD panel illumination)
When a button or dial is operated, the LCD panel illuminates. You can change this illumination setting.
- 0: 12 sec (illumination for 12 sec)
- 1: OFF (Disable panel illumination)
- 2: ON (Illumination always on)
C.Fn-23: (Receiver charge confirmation)
When the receiver unit is fully charged during wireless flash photography, the AF-assist beam emitter of the receiver unit blinks. You can disable this blinking. Set this function for each receiver unit.
- 0: = (AF-assist beam, lamp)
- 1: ( lamp)