Sony’s alpha 7S Mark III is the third iteration in the most video-focused of the company’s a7 series of full frame cameras. It’s essentially a native 4K camera with impressive video specs and a revised user interface. It can capture UHD 4K footage at up to 120p in 10-bit 4:2:2 encoding and promises 16-bit Raw video output.

  • 12MP BSI CMOS sensor
  • Bionz XR processor
  • On-sensor phase detection
  • ISO 80-102,400 (expandable to 40-409,600)
  • 9.44M dot EVF with 0.91x magnification
  • 4K video at up to 120p, 60p for ‘at least an hour’
  • 16-bit Raw video output at up to 60p
  • 10-bit 4:2:2 internal capture (in codecs including H.265 and All-I H.264)
  • Fully articulating LCD
  • 5-axis in-body stabilization with Steady shot active mode
  • Twin card slots that each accept either SD or CFexpress Type A

The Sony a7S III will sell for around $3500. This is a $500 premium over 2015’s Mark II but still $500 lower than the launch price of the Panasonic Lumix DC-S1H, which is arguably its closest competitor.


What’s new and how it compares

The a7S III offers a series of new features such as 10-bit internal video and Raw video output but the changes go much deeper.

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Body, controls and handling

Alongside a host of ergonomic improvements, which includes greater use of the touchscreen, Sony has significantly redesigned its menu system.

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Initial impressions

The a7S III looks to be a workhorse camera for amateur and independent production teams, but it also offers insights into what future alpha cameras will be like.

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Sample gallery

We’ve prepared a sample gallery of images using a near-final a7S III.

See the images