RICHARD BUTLER, JEFF KELLER & RISHI SANYAL, DPREVIEW:
The a7R III is Sony's latest high-resolution camera, which carries over many of the improvements found on the company's flagship a9. The 42.4MP sensor itself hasn't changed from the Mark II, but virtually everything else wired into it has. This allows for faster burst shooting, improved autofocus, and higher quality 4K video. Some important user interface and ergonomic changes, inspired by the a9, have also made the transition.
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