Olympus E-PM2 vs Sony A7R III

Following is a comprehensive comparison of the Olympus E-PM2 versus Sony A7R III, former is a Entry-Level Mirrorless while the other is a Pro Mirrorless by companies Olympus and Sony. There is a large difference between the resolutions of the E-PM2 (16MP) and A7R III (42MP) and the E-PM2 (Four Thirds) and A7R III (Full frame) enjoy different sensor size.

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The E-PM2 was brought out 5 years earlier than the A7R III which is quite a serious difference as far as tech is concerned. Both the cameras come with different body type with the Olympus E-PM2 being a Rangefinder-style mirrorless camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving in to a more detailed comparison, below is a simple highlight of how the E-PM2 scores vs the A7R III when it comes to portability, imaging, features and an overall score.

Below is a sample of the gallery pictures for Olympus PEN E-PM2 & Sony Alpha A7R III. The entire galleries are viewable at Olympus E-PM2 Gallery & Sony A7R III Gallery.

For anyone who is looking to carry around your camera frequently, you are going to need to consider its weight and proportions. The Olympus E-PM2 offers outside measurements of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") having a weight of 269 grams (0.59 lbs) while the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Compare the Olympus E-PM2 versus Sony A7R III in our completely new Camera plus Lens Size Comparison Tool.

Do not forget, the weight of an ILC will change dependant on the lens you are employing at the time. The following is the front view scale comparison of the E-PM2 against the A7R III.

Using size and weight, the portability rating of the E-PM2 and A7R III is 89 and 63 respectively.

Generally, its tough to imagine the difference between sensor sizes merely by reviewing a spec sheet. The image here might offer you a stronger sense of the sensor sizing in the E-PM2 and A7R III.

Clearly, both the cameras have got different resolutions and different sensor sizes. The E-PM2 featuring a tinier sensor is going to make achieving shallower depth of field more challenging and the Sony A7R III will offer you greater detail having its extra 26MP. Greater resolution will make it easier to crop images much more aggressively. The more aged E-PM2 is going to be behind with regard to sensor technology.