Olympus E-3 vs Sony A7 III

On this page, we are matching up the Olympus E-3 vs Sony A7 III, one being a Advanced DSLR and the other is a Pro Mirrorless by companies Olympus and Sony. There is a sizeable difference among the sensor resolutions of the E-3 (10MP) and A7 III (24MP) and the E-3 (Four Thirds) and A7 III (Full frame) posses totally different sensor dimensions.

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The E-3 was released 11 years prior to the A7 III and that is a fairly large gap as far as camera tech is concerned. Both cameras have different body design with the Olympus E-3 being a Mid-size SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before we go right into a complete comparison, here is a concise highlight of how the E-3 grades versus the A7 III in terms of portability, imaging, features and an overall rating.

Here is a sample of the gallery pictures for Olympus E-3 and Sony Alpha A7 III. The complete galleries are available at Olympus E-3 Gallery and Sony A7 III Gallery.

If you are looking to carry your camera often, you'll need to factor in its weight and dimensions. The Olympus E-3 enjoys outside dimensions of 142mm x 116mm x 75mm (5.6" x 4.6" x 3.0") along with a weight of 890 grams (1.96 lbs) whilst the Sony A7 III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

Contrast the Olympus E-3 vs Sony A7 III in the latest Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you select during that time. The following is a front view size comparison of the E-3 against the A7 III.

Considering size and weight, the portability rating of the E-3 and A7 III is 56 and 63 respectively.

Generally, it is very hard to visualise the gap in sensor sizing merely by viewing a spec sheet. The photograph here will offer you a greater sense of the sensor sizes in the E-3 and A7 III.

Clearly, the two cameras provide different megapixel count and different sensor sizing. The E-3 due to its smaller sensor will make shooting shallower DOF trickier and the Sony A7 III will render extra detail as a result of its extra 14 Megapixels. Greater resolution will help you crop images more aggressively. The older E-3 will be behind when it comes to sensor tech.