Olympus E-3 vs Sony A7R III

In this write-up, we are analyzing the Olympus E-3 versus Sony A7R III, one being a Advanced DSLR and the other is a Pro Mirrorless by manufacturers Olympus and Sony. There exists a sizeable gap between the image resolutions of the E-3 (10MP) and A7R III (42MP) and the E-3 (Four Thirds) and A7R III (Full frame) feature totally different sensor sizing.

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The E-3 was brought out 10 years prior to the A7R III and that is quite a large gap as far as technology is concerned. The two cameras offer different body type with the Olympus E-3 being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before we go through a more detailed comparison, below is a simple summation of how the E-3 scores vs the A7R III when considering portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Olympus E-3 and Sony Alpha A7R III. The entire galleries are provided at Olympus E-3 Gallery and Sony A7R III Gallery.

In case you're going to carry your camera regularly, you'll need to consider its weight and proportions. The Olympus E-3 offers outside dimensions of 142mm x 116mm x 75mm (5.6" x 4.6" x 3.0") accompanied by a weight of 890 grams (1.96 lbs) while 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).

Check out the Olympus E-3 versus Sony A7R III in the new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you use at the time. Below is the front view over all size comparison of the E-3 against the A7R III.

Factoring in dimensions and weight, the portability score of the E-3 and A7R III is 56 and 63 respectively.

Sometimes, it is difficult to see the gap between sensor sizing simply by reading through specs. The graphic underneath might offer you a greater sense of the sensor dimensions in the E-3 and A7R III.

As you can plainly see, the 2 cameras offer different megapixel count and different sensor sizing. The E-3 featuring a tinier sensor will make shooting shallower DOF tougher and the Sony A7R III will give you greater detail having its extra 32MP. Greater resolution will also allow you to crop images a little more aggressively. The older E-3 is going to be behind with regard to sensor innovation.