Custom Function Settings
C.Fn
Function
Automatic cancellation
1
of FEB
2
FEB sequence
3
Flash metering mode
4
Test firing button
5
Wireless control
6
Modeling Flash
Flash recycling with
7
external power source
8
Flash ratio increments
9
Focusing lamp on/off
* C.Fn-8 and C.Fn-9 apply to the MT-24EX only.
C.Fn-4: If 1 is set and both flash tubes/heads are selected to fire with autoflash,
the modeling flash will be fired by both A and B at the same output. With
manual flash, the modeling flash will be fired according to the flash ratio
that was set.
C.Fn-5: If 1 is set, any slave units whose slave ID has been set to A or B will fire in
the same group as flash tube/head A or B set as the master unit.
C.Fn-6: If 1 is set and you press the camera's depth-of-field preview button, you
can check the depth of field. The modeling flash cannot be fired.
No.
Setting Description
0
Enabled
1
Disabled
Standard exposure
0
exposure
Decreased exposure
1
exposure
0
E-TTL II/E-TTL autoflash
1
TTL autoflash
E-TTL II/E-TTL autoflash: Full output
0
Manual flash: Fires at set output
1
Uniform modeling flash
0
Slave C only
1
Slaves A, B, and C
0
Enabled
1
Disabled
Recycle with both the MR-14EX/MT-
0
24EX and external power source
Recycle with the external power
1
source only
0
1/2 stop
1
Full stop
0
With focusing lamp button
1
Double-click shutter button
Decreased
Increased exposure
Standard
Increased exposure
29