Sony a7R III

42MP full-frame BSI-CMOS sensor | In-body image stabilization | 4K video capture

What we like:

  • Impressive image quality
  • In-body image stabilization
  • Beautiful 4K footage
  • Excellent battery life

What we don't:

  • Sluggish card write times, especially noticeable after bursts
  • Lock-on AF can be unreliable
  • Difficult to see selected AF area
The Sony a7R III is a 42.4MP full frame mirrorless camera capable of shooting at 10 frames per second. Compared to its predecessor, it gains a much larger battery, better ergonomics, and other refinements that make for a more engaging shooting experience while still offering highly impressive image quality.
The body is mostly borrowed from the sports-focused a9, bringing a host of ergonomic improvements, including the addition of an AF joystick and touchscreen. A larger grip and a higher degree of customization mean it's more comfortable to hold and easier to set up the way you want it to work. The a7R III has dual SD card slots, though write times can be lengthy on the 'slower' UHS-I slot.
The a7R Mark III is an impressive camera that offers a wide range of tools for capturing high quality, high resolution stills and video
Autofocus is improved over its predecessor, with Eye AF in particular pretty much ensuring perfect focus for high resolution portraits. Although the algorithms come from the a9, we aren't expecting pro-sports levels of subject tracking, but the precision with which the camera can achieve perfect focus is impressive.
Image quality is impressive, with plenty of dynamic range and very high levels of detail capture. The camera offers either lossy compressed Raw or very large uncompressed Raw files. While huge, shooting uncompressed Raw files will allow you to make the absolute most of the a7R III's sensor. JPEG detail levels are very good across even in low light and Sony has delivered noticeable improvements in its color rendering compared to the a7R II.
As well as excellent stills, the a7R III is able to produce highly detailed oversampled 4K footage. The camera includes Log gamma profiles for capturing wide dynamic range video and has a Hybrid Log Gamma mode for shooting directly for HDR TVs. Autofocus in video seems improved compared to the Mark II, with the camera much less prone to refocusing unexpectedly.
Overall the a7R Mark III is a very impressive camera that offers a wide range of tools for capturing high quality, high resolution stills and video, even with moving subjects. The handling changes and larger battery make it a much more flexible camera than the Mark II, once you've configured it to suit your shooting style.

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