DxOMark has tested the new Sony a7S III full frame mirrorless camera’s sensor. According to DxOMark, the DxOMark score for a7S III’s sensor is 86 point. Sony a7S III currently is in stock and shipping at Amazon & B&H Photo Video & Adorama.
The Sony A7S III leverages a lot of tech from the A7 and A7R models, and its stills credentials are impressive. However, 12 MP is considered a bit on the low side for stills nowadays, and it is principally as a video camera that the Sony A7S III appeals. The lower pixel count means the sensor’s pixel dimensions on the long edge deliver essentially native 4K without cropping, and those large pixels should have benefits when working with less than ideal lighting.
Although it puts in a strong performance at its lowest ISO settings, with a relatively high maximum dynamic range and maximum color sensitivity, evidently some concessions were made in that regard, as it is at high ISOs where it’s class-leading. In particular, the Sony A7S III sensor has an impressive response between ISO 1600 and ISO 6400, even outperforming rivals using 24 MP BSI CMOS sensors.