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Camera Setup, Modes & Remote Shooting

Everyday setup, custom buttons, the ISO sweet spots, and phone remote control

Everyday setup (a6300)

Custom buttons (a7R III)

ButtonAssigned
C1Creative Styles
C2Focus Area
C3Focus Mode
C4Monitor Brightness

ISO sweet spots (dual conversion gain)

Both bodies quietly switch to a cleaner high-gain mode at a set ISO. Below that, ISO 100 gives maximum dynamic range; at the switch point, read noise drops and shadows lift more cleanly — so it's often better to jump straight there than to sit at an intermediate value.

CameraBase ISOGain switchRemember
a7R III100~ISO 640think 100 → 640
a6400100~ISO 400think 100 → 400

The a6400's native range is 100–32000 (above that is extended/software-boosted). The switch applies to RAW stills; JPEG/video get extra processing.

Phone remote (Smart Remote / PlayMemories)

On NFC bodies, tap the phone to the NFC logo to launch and connect automatically; otherwise start Smart Remote from the camera's App menu and connect the phone to its Wi-Fi. You see a live view and can fire the shutter and adjust exposure compensation; the in-camera app update unlocks full aperture/shutter/ISO control and tap-to-move AF.

Consolidated from notes: Setup Tips a6300; Settings for different modes a6300; Sony a7 Riii CUSTOM BUTTONS; Native ISO range of the Sony a6400; Dual gain mode ISO 640; Smart Remote app

Sourced from Claude