Sony A7R IV vs Sony RX100 III

On this page, we are matching up the Sony A7R IV versus Sony RX100 III, former being a Pro Mirrorless while the other is a Large Sensor Compact and both are produced by Sony. There exists a substantial gap among the resolutions of the A7R IV (61MP) and RX100 III (20MP) and the A7R IV (Full frame) and RX100 III (1") boast different sensor size.

Photography Glossary

The A7R IV was manufactured 5 years later than the RX100 III and that is a fairly big difference as far as camera technology is concerned. Both cameras have different body design with the Sony A7R IV being a SLR-style mirrorless camera and the Sony RX100 III being a Large Sensor Compact camera.

Before delving right into a full comparison, here is a concise summary of how the A7R IV scores vs the RX100 III with regard to portability, imaging, features and an overall grade.

This is a sample of the gallery pictures for Sony Alpha A7R IV & Sony Cyber-shot DSC-RX100 III. The entire galleries are provided at Sony A7R IV Gallery & Sony RX100 III Gallery.

For anybody who is going to lug around your camera, you have to think about its weight and size. The Sony A7R IV features external dimensions of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") along with a weight of 665 grams (1.47 lbs) whilst the Sony RX100 III has specifications of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") with a weight of 290 grams (0.64 lbs).

Check out the Sony A7R IV versus Sony RX100 III in our brand new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will vary depending on the lens you are employing at that moment. Below is a front view over all size comparison of the A7R IV compared to the RX100 III.

Taking into account dimensions and weight, the portability score of the A7R IV and RX100 III is 62 and 89 respectively.

Sometimes, it can be difficult to visualize the gap in sensor measurements merely by looking through technical specs. The graphic here will give you a clearer sense of the sensor dimensions in the A7R IV and RX100 III.

As you can tell, both the cameras have different megapixels and different sensor measurements. The A7R IV because of its larger sensor is going to make achieving shallower depth of field simpler and the Sony A7R IV will provide you with extra detail due to its extra 41MP. Greater resolution will also allow you to crop images a bit more aggressively. The more modern A7R IV should have a benefit with regard to sensor technology.