Sony A7R III vs Sony RX100 III

On this page, we are reviewing the Sony A7R III versus Sony RX100 III, one is a Pro Mirrorless and the other is a Large Sensor Compact and both are produced by Sony. There is a big difference among the sensor resolutions of the A7R III (42MP) and RX100 III (20MP) and the A7R III (Full frame) and RX100 III (1") posses different sensor size.

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The A7R III was brought out 3 years after the RX100 III which is a fairly big gap as far as camera tech is concerned. Each of the cameras have different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony RX100 III being a Large Sensor Compact camera.

Before going straight to a step-by-step comparison, here is a simple overview of how the A7R III scores versus the RX100 III with respect to portability, imaging, features and an overall score.

The following is a sample of the gallery pictures for Sony Alpha A7R III and Sony Cyber-shot DSC-RX100 III. The entire galleries are available at Sony A7R III Gallery and Sony RX100 III Gallery.

When you are going to carry around your camera, you are going to need to consider its weight and size. The Sony A7R III has got exterior measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 657 grams (1.45 lbs) whilst the Sony RX100 III has specifications of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") along with a weight of 290 grams (0.64 lbs).

Look at the Sony A7R III versus Sony RX100 III in the all new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you are employing at that time. Underneath is a front view measurements comparison of the A7R III and the RX100 III.

Taking into account size and weight, the portability grade of the A7R III and RX100 III is 63 and 89 respectively.

Generally, it can be difficult to picture the contrast in sensor sizes only by researching a spec sheet. The picture below should offer you a far better sense of the sensor sizing in the A7R III and RX100 III.

Clearly, both of these cameras have different resolutions and different sensor sizes. The A7R III because of its larger sensor is going to make achieving bokeh easier and the Sony A7R III will result in greater detail having its extra 22MP. Greater resolution will also allow you to crop photos a bit more aggressively. The newer A7R III provides an advantage in sensor innovation.