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* 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.
Custom Function Settings
C.Fn Function No. Setting Description
1Automatic cancellation
of FEB
0Enabled
1Disabled
2FEB sequence
0Standard exposure Decreased
exposure Increased exposure
1Decreased exposure Standard
exposure Increased exposure
3Flash metering mode 0E-TTL II/E-TTL autoflash
1TTL autoflash
4Test firing button 0E-TTL II/E-TTL autoflash: Full output
Manual flash: Fires at set output
1 Uniform modeling flash
5Wireless control 0Slave C only
1Slaves A, B, and C
6Modeling Flash 0Enabled
1Disabled
7Flash recycling with
external power source
0Recycle with both the MR-14EX/MT-
24EX and external power source
1Recycle with the external power
source only
8Flash ratio increments 01/2 stop
1Full stop
9Focusing lamp on/off 0With focusing lamp button
1Double-click shutter button
MR14_MT24_02.fm Page 29 Saturday, January 23, 2010 10:46 AM