The high-resolution E-mount shooter makes it the highest-scoring mirrorless system camera to date, beating the A7R II by two points. This is also the fourth-highest score ever recorded at DxO. Sony A7R III score beaten only by the sensors in the medium-format Hasselblad X1D-50C and Pentax 645Z, and by the 12Mp full-frame Sony A7S II.
Sony A7R III Sensor Review : First Mirrorless to Hit 100 Points
According to test results, the most significant improvement of the A7R III’s sensor over the A7R II’s is its dynamic range. The A7R III’s low-light ISO (Sports) score of 3523 is excellent. It’s actually only 0.4 EV higher than that achieved by the Nikon D850.
The new Sony a7R III (Amazon/ B&H/ Adorama) combines a high-resolution 42.4 MP back-illuminated Exmor R CMOS image sensor with impressive shooting speeds at up to 10 fps with full AF/AE tracking, as well as beautiful image and 4K video quality, wide 15-stop dynamic range, high sensitivity with noise reduction of almost a full stop and more. See the best lenses for Sony A7R III camera.
From DxOMark conclusion:
Comparing the A7R III sensor to the Nikon D850’s reveals the advantage that the Nikon camera’s lower minimum sensitivity (ISO) value brings. Photographers who predominantly shoot in bright light or capture motionless subjects with the camera on a tripod will record the most information, be it color, tone, or detail with the Nikon D850 set to ISO 32. However, if they require values above that, the Sony A7R III sensor produces marginally better images.
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