Olympus E-520 vs Sony A7R III

Following is a extensive assessment of the Olympus E-520 and Sony A7R III, one is a Entry-Level DSLR and the other is a Pro Mirrorless by companies Olympus and Sony. There is a significant difference between the resolutions of the E-520 (10MP) and A7R III (42MP) and the E-520 (Four Thirds) and A7R III (Full frame) provide different sensor sizes.

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The E-520 was revealed 10 years earlier than the A7R III which is quite a sizable gap as far as tech is concerned. The two cameras feature different body design with the Olympus E-520 being a Compact SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving into a in depth comparison, here is a short highlight of how the E-520 scores versus the A7R III with regards to portability, imaging, features and an overall score.

Following is a sample of the gallery pictures for Olympus E-520 and Sony Alpha A7R III. The full galleries are available at Olympus E-520 Gallery and Sony A7R III Gallery.

In case you're planning to carry around your camera regularly, you have to factor in its weight and volume. The Olympus E-520 offers exterior measurements of 136mm x 92mm x 68mm (5.4" x 3.6" x 2.7") with a weight of 552 grams (1.22 lbs) while the Sony A7R III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Check the Olympus E-520 and Sony A7R III in the all new Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are using at that time. The following is a front view physical size comparison of the E-520 and the A7R III.

Using size and weight, the portability grade of the E-520 and A7R III is 68 and 63 respectively.

Usually, its tough to picture the difference between sensor sizes merely by reading through specifications. The pic underneath will help offer you a stronger sense of the sensor sizing in the E-520 and A7R III.

Plainly, both of those cameras come with different resolutions and different sensor sizes. The E-520 using its tinier sensor is going to make shooting shallower DOF harder and the Sony A7R III will give you greater detail because of its extra 32 Megapixels. Greater resolution will allow you to crop photos a good deal more aggressively. The more aged E-520 is going to be behind with regard to sensor technology.