Sony A7R III vs Sony RX100 IV

On this page, we are contrasting the Sony A7R III versus Sony RX100 IV, one is a Pro Mirrorless and the other is a Large Sensor Compact and they are both sold by Sony. There is a huge difference among the image resolutions of the A7R III (42MP) and RX100 IV (20MP) and the A7R III (Full frame) and RX100 IV (1") posses totally different sensor measurements.

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The A7R III was announced 2 years after the RX100 IV which is a fairly significant gap as far as camera tech is concerned. Each of these cameras have different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony RX100 IV being a Large Sensor Compact camera.

Before diving into a full comparison, here is a simple highlight of how the A7R III matches up against the RX100 IV with respect to portability, imaging, features and an overall score.

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

When you are looking to carry around your camera frequently, you should factor its weight and size. The Sony A7R III provides outside measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 657 grams (1.45 lbs) whilst the Sony RX100 IV has specifications of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") having a weight of 298 grams (0.66 lbs).

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

Take into consideration, the weight of an Interchangeable Lens Camera will change depending on the lens you choose during that time. The following is a front view size comparison of the A7R III vs the RX100 IV.

Considering size and weight, the portability rating of the A7R III and RX100 IV is 63 and 89 respectively.

In many cases, it is hard to visualise the difference in sensor sizes only by seeing a spec sheet. The picture underneath might provide you a more clear sense of the sensor sizing in the A7R III and RX100 IV.

Clearly, both cameras have different resolutions and different sensor sizes. The A7R III using its larger sensor will make achieving shallower depth of field simpler and the Sony A7R III will show extra detail with its extra 22 Megapixels. Greater resolution will also let you crop pics a bit more aggressively. The younger A7R III will have an advantage in sensor innovation.