Olympus E-520 vs Sony A9

In this article, we are looking at the Olympus E-520 vs Sony A9, one is a Entry-Level DSLR and the other is a Pro Mirrorless by brands Olympus and Sony. There is a crucial difference among the sensor resolutions of the E-520 (10MP) and A9 (24MP) and the E-520 (Four Thirds) and A9 (Full frame) possess different sensor dimensions.

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The E-520 was announced 9 years before the A9 which is a fairly serious gap as far as camera tech is concerned. Both cameras offer different body type with the Olympus E-520 being a Compact SLR camera and the Sony A9 being a SLR-style mirrorless camera.

Before getting straight into a detailed comparison, below is a quick synopsis of how the E-520 grades vs the A9 with regard to portability, imaging, features and an overall mark.

Below is a sample of the gallery pictures for Olympus E-520 and Sony Alpha A9. The whole galleries are viewable at Olympus E-520 Gallery and Sony A9 Gallery.

If you are planning to travel with your camera often, you should take into account its weight and proportions. The Olympus E-520 enjoys outer measurements of 136mm x 92mm x 68mm (5.4" x 3.6" x 2.7") with a weight of 552 grams (1.22 lbs) whilst the Sony A9 has measurements of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") along with a weight of 673 grams (1.48 lbs).

Look at the Olympus E-520 vs Sony A9 in the latest Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you are using at the time. Here is the front view overall size comparison of the E-520 compared to the A9.

Considering size and weight, the portability grade of the E-520 and A9 is 68 and 65 respectively.

In many cases, it's difficult to visualize the gap in sensor dimensions just by looking through specifications. The image below may give you a more clear sense of the sensor measurements in the E-520 and A9.

Plainly, the two cameras enjoy different megapixel count and different sensor dimensions. The E-520 having a smaller sensor is going to make getting shallow depth of field tougher and the Sony A9 will provide you with greater detail with its extra 14MP. Greater resolution will enable you to crop pics far more aggressively. The more aged E-520 will be disadvantaged with regard to sensor technology.