Canon SPEEDLITE EL-1 Advanced User's Manual page 203

C.Fn-03:
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:
0: ON (Enabled)
1: OFF (Disabled)
This disables the emission of the AF-assist beam from the Speedlite.
Note
The flash mark displayed when C.Fn-08 is set changes according to the P.Fn-01
( ) setting.
C.Fn-10:
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)
(FEB auto cancel)
(AF-assist beam firing)
(Receiver auto power off timer)
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