Olympus E-P1 vs Sony A7 III

Below, we are reviewing the Olympus E-P1 vs Sony A7 III, former is a Entry-Level Mirrorless while the other is a Pro Mirrorless by rivals Olympus and Sony. There is a sizable difference among the sensor resolutions of the E-P1 (12MP) and A7 III (24MP) and the E-P1 (Four Thirds) and A7 III (Full frame) come with different sensor size.

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The E-P1 was manufactured 9 years prior to the A7 III which is a fairly significant difference as far as camera tech is concerned. Each of the cameras come with different body type with the Olympus E-P1 being a Rangefinder-style mirrorless camera and the Sony A7 III being a SLR-style mirrorless camera.

Before getting in to a detailed comparison, below is a quick introduction of how the E-P1 grades versus the A7 III for portability, imaging, features and an overall score.

Following is a sample of the gallery pictures for Olympus PEN E-P1 & Sony Alpha A7 III. The entire galleries are available at Olympus E-P1 Gallery & Sony A7 III Gallery.

In case you're aiming to carry around your camera regularly, you'll need to factor its weight and measurements. The Olympus E-P1 features external dimensions of 121mm x 70mm x 36mm (4.8" x 2.8" x 1.4") with a weight of 355 grams (0.78 lbs) whilst the Sony A7 III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 650 grams (1.43 lbs).

Check the Olympus E-P1 vs Sony A7 III in our newest Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will differ depending on the lens you choose at the time. Underneath is the front view measurements comparison of the E-P1 versus the A7 III.

Taking into account size and weight, the portability score of the E-P1 and A7 III is 86 and 63 respectively.

In many cases, its tough to picture the difference in sensor sizes just by researching specifications. The pic here should offer you a far better sense of the sensor sizes in the E-P1 and A7 III.

To sum up, both of these cameras posses different megapixel count and different sensor sizes. The E-P1 due to its smaller sensor is going to make achieving shallow depth of field tougher and the Sony A7 III will render extra detail due to its extra 12 Megapixels. Greater resolution will enable you to crop images somewhat more aggressively. The more aged E-P1 will be disadvantaged with regard to sensor tech.