Canon Speedlite 600EX-RT - Manual (Page 97)

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C: Setting Custom Functions
C.Fn-00: " (Distance indicator display)
You can select the distance indicator display for the LCD panel from meters
and feet.
0: m (Meters (m))
1: ft (Feet (ft))
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 (Enabled)
1: OFF (Disabled)
C.Fn-02: $ (Modeling flash)
0: % (Enabled (Depth-of-field preview button))
Press the camera’s depth-of-field preview button to fire the modeling
flash.
1: & (Enabled (Test firing button))
Press the Speedlite’s test flash button to fire the modeling flash.
2: ' (Enabled (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.
When the effective flash distance exceeds 18 m/60 ft., the right end of the
effective flash range on the LCD panel changes to .
When the temperature of the flash head rises due to continuous flash firing,
the time until auto power off takes effect may increase.
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