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.
Same sensor, better performance
The a7R III uses the same full-frame 42.MP BSI CMOS sensor as its predecessor, though improved readout circuitry lowers the already low read noise, improving dynamic range.
Sony promises a slight improvement in rolling shutter, but not to the level as the a9, so the a7R III didn’t earn the ‘Anti-distortion shutter’ designation.
While the hybrid autofocus continues to offer 399 phase-detect points, there are now 425 contrast-detect points, up from 25 on the a7R II.
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