Our Strobist portrait setup step-by-step: 3-4
03 Pop-up control
Set the pop-up flash to its remote control Commander mode. In the Custom Setting menu, find the Bracketing/Flash options. Scroll to the one called Flash Control for built-in flash, and hit OK. This is typically set to TTL, so you need to switch it to Commander mode.
04 Commander options
In Commander mode options, turn built-in flash from TTL to Off (marked with two dashes). With one flashgun, you only need to use Group A. To control the flash power conveniently from the camera, set its Mode to TTL and set Comp (flash exposure compensation) to +1 or +2. Press OK.
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