Sony A7R III vs Sony RX100

On this page, we are matching up the Sony A7R III and Sony RX100, one is a Pro Mirrorless and the other is a Large Sensor Compact and they are both designed by Sony. There is a huge difference among the resolutions of the A7R III (42MP) and RX100 (20MP) and the A7R III (Full frame) and RX100 (1") provide totally different sensor sizes.

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The A7R III was announced 5 years after the RX100 which is a fairly significant gap as far as camera tech is concerned. Both cameras have different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony RX100 being a Large Sensor Compact camera.

Before going straight to a detailed comparison, here is a brief highlight of how the A7R III grades versus the RX100 in relation to portability, imaging, features and an overall score.

Below is a sample of the gallery pics for Sony Alpha A7R III and Sony Cyber-shot DSC-RX100. The whole galleries are provided at Sony A7R III Gallery and Sony RX100 Gallery.

When you are planning to carry around your camera often, you should think about its weight and size. The Sony A7R III features outer measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs) whilst the Sony RX100 has specifications of 102mm x 58mm x 36mm (4.0" x 2.3" x 1.4") with a weight of 240 grams (0.53 lbs).

Check the Sony A7R III and Sony RX100 in the latest Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilizing at that time. The following is a front view over all size comparison of the A7R III versus the RX100.

Using size and weight, the portability grade of the A7R III and RX100 is 63 and 91 respectively.

Generally, its hard to see the gap in sensor sizes simply by going through specs. The pic here might provide you a much better sense of the sensor measurements in the A7R III and RX100.

All in all, each of these cameras have different megapixel count and different sensor sizes. The A7R III using its larger sensor will make achieving bokeh simpler and the Sony A7R III will produce greater detail with its extra 22 Megapixels. Greater resolution will also make it easier to crop pics a bit more aggressively. The fresher A7R III will have an edge when it comes to sensor innovation.