Pentax MX-1 vs Sony A7R III

Following is a extensive comparison of the Pentax MX-1 versus Sony A7R III, one is a Small Sensor Compact and the latter is a Pro Mirrorless by companies Pentax and Sony. There is a sizeable difference among the resolutions of the MX-1 (12MP) and A7R III (42MP) and the MX-1 (1/1.7") and A7R III (Full frame) posses different sensor dimensions.

Photography Glossary

The MX-1 was manufactured 5 years prior to the A7R III which is a fairly large gap as far as camera tech is concerned. The two cameras have different body design with the Pentax MX-1 being a Compact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving straight to a thorough comparison, here is a brief introduction of how the MX-1 grades versus the A7R III when considering portability, imaging, features and an overall score.

Following is a preview of the gallery images for Pentax MX-1 and Sony Alpha A7R III. The entire galleries are available at Pentax MX-1 Gallery and Sony A7R III Gallery.

For those who are planning to carry around your camera, you have to think about its weight and measurements. The Pentax MX-1 provides exterior dimensions of 122mm x 61mm x 51mm (4.8" x 2.4" x 2.0") and a weight of 391 grams (0.86 lbs) and the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 657 grams (1.45 lbs).

Analyze the Pentax MX-1 versus Sony A7R III in the new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you select at that moment. Underneath is a front view measurement comparison of the MX-1 vs the A7R III.

Taking into consideration size and weight, the portability rating of the MX-1 and A7R III is 84 and 63 respectively.

Often, it's difficult to visualize the difference in sensor sizes purely by looking through specifications. The pic below will help give you a far better sense of the sensor sizes in the MX-1 and A7R III.

Plainly, the 2 cameras have different resolutions and different sensor sizes. The MX-1 featuring a smaller sensor is going to make shooting shallower DOF harder and the Sony A7R III will provide you with extra detail due to its extra 30MP. Higher resolution can also allow you to crop pictures a bit more aggressively. The more aged MX-1 will be disadvantaged when it comes to sensor innovation.