Olympus E-1 vs Sony A7 III

On this page, we will be analyzing the Olympus E-1 and Sony A7 III, one is a Pro DSLR and the latter is a Pro Mirrorless by competitors Olympus and Sony. There is a big difference between the resolutions of the E-1 (5MP) and A7 III (24MP) and the E-1 (Four Thirds) and A7 III (Full frame) offer totally different sensor size.

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The E-1 was manufactured 15 years prior to the A7 III which is quite a big gap as far as tech is concerned. Both the cameras have different body design with the Olympus E-1 being a Large SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before getting straight to a step-by-step comparison, here is a quick overview of how the E-1 scores against the A7 III in relation to portability, imaging, features and an overall mark.

Below is a preview of the gallery photos for Olympus E-1 and Sony Alpha A7 III. The entire galleries are provided at Olympus E-1 Gallery and Sony A7 III Gallery.

If you're going to travel with your camera often, you have to factor in its weight and dimensions. The Olympus E-1 features external dimensions of 141mm x 104mm x 81mm (5.6" x 4.1" x 3.2") and a weight of 735 grams (1.62 lbs) while the Sony A7 III has dimensions 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-1 and Sony A7 III in the all new Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are utilizing during that time. Here is a front view physical size comparison of the E-1 versus the A7 III.

Using size and weight, the portability grade of the E-1 and A7 III is 59 and 63 respectively.

Often, it is very tough to visualise the gap between sensor dimensions only by reviewing specs. The picture here might offer you a much better sense of the sensor dimensions in the E-1 and A7 III.

As you can plainly see, each of these cameras provide different megapixels and different sensor dimensions. The E-1 due to its tinier sensor will make achieving shallow depth of field more challenging and the Sony A7 III will offer extra detail due to its extra 19 Megapixels. Higher resolution will let you crop pictures more aggressively. The more aged E-1 is going to be behind when it comes to sensor technology.