Olympus E-M5 III vs Sony A7R III

Following is a extensive overview of the Olympus E-M5 III and Sony A7R III, one is a Advanced Mirrorless and the other is a Pro Mirrorless by companies Olympus and Sony. There exists a huge gap among the image resolutions of the E-M5 III (20MP) and A7R III (42MP) and the E-M5 III (Four Thirds) and A7R III (Full frame) provide different sensor dimensions.

Photography Glossary

The E-M5 III was revealed 2 years after the A7R III which is a fairly significant gap as far as camera technology is concerned. Both of the cameras have the same body design (SLR-style mirrorless).

Before we go right into a in depth comparison, here is a simple introduction of how the E-M5 III scores versus the A7R III with regards to portability, imaging, features and an overall score.

Below is a sample of the gallery pics for Olympus OM-D E-M5 III and Sony Alpha A7R III. The full galleries are provided at Olympus E-M5 III Gallery and Sony A7R III Gallery.

When you are aiming to carry around your camera, you have to factor its weight and dimensions. The Olympus E-M5 III enjoys outer dimensions of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") accompanied by a weight of 414 grams (0.91 lbs) and the Sony A7R III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

See the Olympus E-M5 III and Sony A7R III in the latest Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will change based on the lens you are utilizing during that time. Following is a front view measurements comparison of the E-M5 III compared to the A7R III.

Considering dimensions and weight, the portability score of the E-M5 III and A7R III is 80 and 63 respectively.

Typically, it can be hard to picture the gap in sensor sizes simply by going through specs. The image underneath will offer you a better sense of the sensor dimensions in the E-M5 III and A7R III.

All in all, both of the cameras provide different resolutions and different sensor sizes. The E-M5 III having a smaller sensor is going to make achieving bokeh harder and the Sony A7R III will produce extra detail because of its extra 22 Megapixels. Greater resolution will also allow you to crop pics more aggressively. The younger E-M5 III should have a benefit with regard to sensor innovation.