Canon Speedlite 600EX-RT Instruction Manual - Page 98

C: Setting Custom Functions C.Fn-03: ( (FEB auto cancel) 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 order of the FEB sequence: 0: Standard exposure, -: Decreased exposure (darker) and +: Increased exposure (brighter). 0: 0  -  + 1: -  0  + C.Fn-05: * (Flash metering mode) You can change the automatic flash metering mode for flash shooting. 0: E-TTL II 1: TTL 2: Ext.A (External metering: Auto) 3: Ext.M (External metering: Manual) When using an EOS digital camera or EOS REBEL T2/EOS 300X, do not set to 1. Depending on the model, the flash metering may not be controlled correctly; for example, the flash may not fire, or it may always fire at full power. Also, wireless flash shooting can no longer be performed. 1 is the setting for Type-B EOS film cameras. When using a Type-B camera, you cannot perform E-TTL II/E-TTL autoflash shooting even when 0 is set. 96