Olympus E-PM2 vs Sony A7 III

Below is a extended assessment of the Olympus E-PM2 and Sony A7 III, one being a Entry-Level Mirrorless and the latter is a Pro Mirrorless by companies Olympus and Sony. There exists a huge gap among the resolutions of the E-PM2 (16MP) and A7 III (24MP) and the E-PM2 (Four Thirds) and A7 III (Full frame) come with totally different sensor sizing.

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The E-PM2 was brought out 5 years prior to the A7 III and that is a fairly significant gap as far as camera technology is concerned. The two cameras offer different body type with the Olympus E-PM2 being a Rangefinder-style mirrorless camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving through a in depth comparison, below is a quick summary of how the E-PM2 scores vs the A7 III when considering portability, imaging, features and an overall grade.

Below is a preview of the gallery images for Olympus PEN E-PM2 and Sony Alpha A7 III. The entire galleries are viewable at Olympus E-PM2 Gallery and Sony A7 III Gallery.

When you are intending to lug around your camera frequently, you should factor its weight and measurements. The Olympus E-PM2 provides exterior dimensions of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") with a weight of 269 grams (0.59 lbs) whilst the Sony A7 III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 650 grams (1.43 lbs).

See the Olympus E-PM2 and Sony A7 III in the all new Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at that moment. The following is the front view size comparison of the E-PM2 vs the A7 III.

Taking into account dimensions and weight, the portability grade of the E-PM2 and A7 III is 89 and 63 respectively.

Quite often, its tough to see the difference in sensor measurements only by researching a spec sheet. The photograph below should provide you a much better sense of the sensor sizes in the E-PM2 and A7 III.

As you can see, each of the cameras offer different megapixels and different sensor measurements. The E-PM2 because of its smaller sensor will make achieving shallower depth of field trickier and the Sony A7 III will result in more detail having its extra 8 Megapixels. Higher resolution will enable you to crop shots a little more aggressively. The older E-PM2 will be disadvantaged when it comes to sensor technology.