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1. Press <MENU> Button until C.Fn menu is displayed. The “Ver x.x” in the top right
corner refers to the software version.
2. Select the custom function No.
• Turn the Select Dial to select the Custom Function No.
3. Change the Setting.
• Press Set Button and Setting No. Blinks.
• Turn the Select Dial to set the desired number. Pressing Set Button will confirm
the settings.
• After you set the Custom Function and press <MENU> button, the camera will be
ready to shoot.
4. In the C.Fn states, long press the “Clear” button for 2 seconds until “OK” is
displayed on the panel, which means the values in C.Fn can be reset.
Protection Function
Over-Temperature Protection
• To avoid overheating and deteriorating the flash head, do not fire more than 30
continuous flashes in fast succession 1/1 full power. After 30 continuous flashes,
allow a rest time of at least 10 minutes.
• If you fire more than 30 continuous flashes and the fire more flashes in short
intervals, the inner over-temperature protection function may be activated. If this
occurs, allow a rest time of about 10 minutes, and the flash unit will then return
to normal.
• When the over-temperature protection is started is shown on the LCD display.
Number of flashes that will activate over-temperature protection: