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Sony a6400
Sony · a6400 · Pro lesson

Custom buttons, your way

Which custom button setup is right for the Sony a6400?

camerasdecoded.com/camera-select/sony/a6400/custom-buttons
The answer — share this
Custom Key holds three separate maps — stills, movies, playback. Put Eye AF on the AEL button (hold it and eyes lock from anywhere in the frame), Tracking On on Custom Button 1, and Focus Standard on the center button.
Menu: Camera Settings2 → Custom Key  ·  AEL Button → Eye AF  ·  Custom Button 1 → Tracking On  ·  Center Button → Focus Standard
Cameras Decoded — Camera Select
The Bench

Three maps, not one

MENU→Camera Settings2→Custom Key

The assignable bench: Custom Button 1, the AEL button, the Fn button, the control wheel’s center/left/right/down, Custom Button 2, and the focus-hold button on lenses that have one. The structure that matters: stills, movies and playback each keep their own [Custom Key] set. The movie set can be set to Follow Custom to mirror the stills map.

The Map

Hold for eyes, hold for tracking

MENU→Camera Settings2→Custom Key

AEL button → Eye AF — the pairing Sony’s own guide demonstrates: hold it and the camera focuses on eyes across the whole screen whatever the focus area says; release and your area returns. Custom Button 1 → Tracking On: hold to temporarily turn your area into its Tracking twin. Center button → Focus Standard, for moving the focus frame with the wheel.

The Overlooked Key

The lens has a button too

MENU→Camera Settings2→Custom Key

Shooting functions can also be assigned to the focus-hold button on the lens — the one control reachable without changing your grip on a long lens. Dress the playback set too: Rating on a wheel direction makes culling a one-thumb job.

Try it now

Build the map: AEL to Eye AF, C1 to Tracking On, movie set to Follow Custom — then test both holds on someone moving through the room.