OM SYSTEM OM-3 / Sony α7 IV (ILCE-7M4)

Dates from the manufacturer’s North America press release.

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

CIPA 2024. Body figure with 12–45 mm f/4 PRO at 45 mm; Sync IS figure with 12–100 mm f/4 IS PRO at 100 mm, half-press IS off. Not a guarantee for every shot.

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

Magnification with a 50 mm lens at infinity, −1 dioptre; depends on the selected viewfinder style.

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

Slow shutter speeds and flash cannot be used. The compatible-lens list for 50 fps is limited.

Not available while connected to a smartphone over Wi-Fi.

With H.265 selected, only OM-Log400 and HLG are available.

Available rates depend on codec and frame rate.

Manufacturer’s own test condition.

In RAW output the camera does not record to the card.

4K/C4K, ALL-Intra and 100 fps or faster recording require a UHS speed class 3 card or better.

Wired remote control is not supported.

Approximate values measured with a KIOXIA 64 GB UHS-II card.

Powering needs a USB PD source rated at 27 W or more (9 V 3 A, 15 V 2 A or 15 V 3 A).

IP53 needs a compatible splash- and dust-proof lens; not applicable while charging or with HDMI connected.

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

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.

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.