A fourth-place finish among Sony sensors puts it ahead of the high-end a9, which features a similar 24MP sensor and comes in at 92 points. The Sony A7 III achieves an overall DxOMark sensor score of 96 points and ranks in the top five best Sony sensors we’ve tested, just behind the full-frame Sony Cyber-shot DSC-RX1R II fixed-lens compact camera, and the Sony A7R II. Unsurprisingly, the A7 III body shares the some of the conveniences and ergonomics of those two earlier body designs, including dual SD slots, a larger Z-type battery, touchscreen control, and a larger hand grip. Video capture also benefits, with the cinematic 24p and 30p 4K (UHD) downsampled from the full width of the sensor - effectively a 1.2x crop. While some of the features have trickled down from the 24MP A9, the speed gains over its predecessor are from the same “front-end LSI” preprocessor found on the A7R III. The new model also gets the vaunted Lock-on AF and Eye AF modes seen on the A9. Its 425 contrast-detection AF points are complemented by 693 phase-detection AF points with 93% frame coverage, which Sony say performs twice as fast as its predecessor. Although not a “stacked CMOS” sensor design like that of the a9, some of the technology derived from that model has filtered down, such as an electronic shutter mode at a still impressive 10fps, and a new, faster hybrid AF system. At $2,000, the Sony A7 III is a much more accessibly-priced model, built around a 5-axis, image-stabilized, 24MP full- frame BSI CMOS sensor. After the ground-breaking A9 and the eagerly anticipated A7R III, Sony has lifted the lid on the A7 III.
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