Olympus E-620 vs Sony A7R III

Let's look a bit more closely at the Olympus E-620 versus Sony A7R III, one being a Entry-Level DSLR and the latter is a Pro Mirrorless by competitors Olympus and Sony. There is a sizeable difference between the resolutions of the E-620 (12MP) and A7R III (42MP) and the E-620 (Four Thirds) and A7R III (Full frame) provide totally different sensor sizing.

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The E-620 was revealed 9 years before the A7R III and that is quite a large gap as far as tech is concerned. Both of the cameras feature different body design with the Olympus E-620 being a Compact SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving right into a comprehensive comparison, here is a short introduction of how the E-620 grades vs the A7R III with regard to portability, imaging, features and an overall grade.

Here is a preview of the gallery photos for Olympus E-620 and Sony Alpha A7R III. The full galleries are available at Olympus E-620 Gallery and Sony A7R III Gallery.

If you are looking to lug around your camera, you are going to need to factor in its weight and proportions. The Olympus E-620 offers outside dimensions of 130mm x 94mm x 60mm (5.1" x 3.7" x 2.4") along with a weight of 500 grams (1.10 lbs) and the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs).

Look at the Olympus E-620 versus Sony A7R III in the all new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change depending on the lens you have at the time. Here is a front view proportions comparison of the E-620 versus the A7R III.

Looking at size and weight, the portability grade of the E-620 and A7R III is 71 and 63 respectively.

Usually, it can be tough to envision the contrast between sensor measurements simply by reviewing specs. The graphic underneath may give you a better sense of the sensor sizes in the E-620 and A7R III.

All in all, both of these cameras feature different resolutions and different sensor measurements. The E-620 with its tinier sensor will make shooting shallower DOF more difficult and the Sony A7R III will offer more detail because of its extra 30 Megapixels. Higher resolution will also allow you to crop photographs way more aggressively. The older E-620 is going to be behind when it comes to sensor tech.