Canon EOS 5D Mark II EOS 5D Mark II Instruction Manual - Page 179

3 Custom Function SettingsN C.Fn III -3 AF point selection method 0: Normal Press the button, then use or dial to select an AF point. 1: Multi-controller direct Without pressing the button first, you can just use the to select the desired AF point. Pressing the button will set it to automatic AF point selection. 2: Quick Control Dial direct Without pressing the button first, you can just use the to select the desired AF point. By holding down the button and turning the dial, you can set the exposure compensation. C.Fn III -4 Superimposed display 0: On 1: Off When focus is achieved, the AF point will not flash in red in the viewfinder. Recommended when it is bothersome to see it light up. The AF point will still light when you select it. C.Fn III -5 AF-assist beam firing Enables or disables the EOS-dedicated Speedlite's AF-assist beam. 0: Enable 1: Disable The AF-assist beam is not emitted. If the external, EOS-dedicated Speedlite's [AF-assist beam firing] Custom Function is set to [Disabled], the Speedlite will not emit the AF-assist beam even if the camera's C.Fn III -5-0 is set. 179