Olympus E-520 vs Sony A7 III

Its time to look more in depth at the Olympus E-520 versus Sony A7 III, former is a Entry-Level DSLR while the latter is a Pro Mirrorless by companies Olympus and Sony. There exists a considerable gap among the sensor resolutions of the E-520 (10MP) and A7 III (24MP) and the E-520 (Four Thirds) and A7 III (Full frame) have different sensor sizes.

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The E-520 was released 10 years before the A7 III which is a fairly large difference as far as camera technology is concerned. The two cameras feature different body design with the Olympus E-520 being a Compact SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before delving into a more detailed comparison, here is a quick overview of how the E-520 scores vs the A7 III when it comes to portability, imaging, features and an overall score.

This is a preview of the gallery images for Olympus E-520 & Sony Alpha A7 III. The complete galleries are provided at Olympus E-520 Gallery & Sony A7 III Gallery.

If you are aiming to carry around your camera often, you need to think about its weight and proportions. The Olympus E-520 enjoys external measurements of 136mm x 92mm x 68mm (5.4" x 3.6" x 2.7") and a weight of 552 grams (1.22 lbs) whilst the Sony A7 III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 650 grams (1.43 lbs).

Contrast the Olympus E-520 versus Sony A7 III in our brand new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ depending on the lens you select at that moment. Following is a front view over all size comparison of the E-520 and the A7 III.

Taking into consideration dimensions and weight, the portability score of the E-520 and A7 III is 68 and 63 respectively.

Sometimes, it can be hard to picture the difference in sensor sizes simply by looking through a spec sheet. The pic here should offer you a stronger sense of the sensor measurements in the E-520 and A7 III.

As you can see, the 2 cameras feature different resolutions and different sensor sizes. The E-520 because of its smaller sensor is going to make achieving shallower DOF trickier and the Sony A7 III will provide you with greater detail as a result of its extra 14 Megapixels. Higher resolution can also allow you to crop shots way more aggressively. The more aged E-520 will be disadvantaged when it comes to sensor innovation.