Camera faceoff

a7 IV vs a7S III

Sony

Specs at a glance

Spec

Summary

Choose the a7S III for professional video production where extreme low-light performance and uncropped 4K 120p are paramount. Opt for the a7 IV if you need a versatile hybrid camera excelling in both high-resolution stills and capable video, with its advanced autofocus system.

Which would you pick?

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Highlights

a7 IV

Sensor & Image Science: 33MP full-frame sensor for high-resolution stills and detailed video.
Codecs & Formats: Internal 10-bit 4:2:2 recording for robust grading.
Tools & Usability: Advanced Real-time Tracking AF for reliable subject tracking in stills and video.

a7S III

Sensor & Image Science: 12.1MP sensor with exceptional low-light performance and 15 stops of dynamic range.
Codecs & Formats: Internal 4K 120p without crop and XAVC S-I for high-quality intra-frame recording.
I/O & Connectivity: Full-size HDMI port for reliable external monitor/recorder connections.

The trade-off

Choosing the a7 IV means giving up uncropped 4K 120p and the superior low-light capabilities of the a7S III. Choosing the a7S III means giving up the higher 33MP resolution for stills.