Fujifilm X-T30 III / Sony α7 IV (ILCE-7M4)

APS-C is a sensor size smaller than full frame and common in mirrorless cameras. X-Trans is Fujifilm's own colour filter layout.

Back illumination moves the wiring behind the light-sensitive layer, helping reduce noise in low light.

For stills, stabilisation requires a lens with OIS.

−7 EV shows that focusing can work in very dark scenes; the lower the value, the less light is needed.

Phase-detection points track the subject quickly; eye detection locks focus on the eye of moving people and animals.

The 120 fps finder setting shows a smoother view when following moving subjects.

10-bit 4:2:2 keeps more tone and colour information for grading. HDMI RAW needs a compatible external recorder.

XAVC S-I compresses each frame individually; it is easy to edit but takes much more space. 10-bit 4:2:2 reduces banding when grading.

Frame counts are CIPA figures; real use varies with viewfinder, screen and temperature.

The figure is measured with the Planar T* FE 50 mm F1.4 ZA for pitch/yaw only; it varies by lens and conditions.

Fast cards are needed for high-bitrate S&Q and S-I recording.

USB PD lets the camera run from a power bank or adapter during long shoots.

The coating aims to reduce dust sticking to the sensor; Sony gives no moisture-resistance rating on this page.