Olympus E-PM2 vs Sony A7R IV

Here is a in depth review of the Olympus E-PM2 versus Sony A7R IV, one being a Entry-Level Mirrorless and the other is a Pro Mirrorless by competitors Olympus and Sony. There is a significant difference among the image resolutions of the E-PM2 (16MP) and A7R IV (61MP) and the E-PM2 (Four Thirds) and A7R IV (Full frame) feature totally different sensor measurements.

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The E-PM2 was released 7 years prior to the A7R IV and that is a fairly sizable gap as far as camera tech is concerned. Each of the cameras come with different body type with the Olympus E-PM2 being a Rangefinder-style mirrorless camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before diving in to a thorough comparison, below is a brief highlight of how the E-PM2 scores versus the A7R IV with regards to portability, imaging, features and an overall rating.

This is a sample of the gallery pics for Olympus PEN E-PM2 and Sony Alpha A7R IV. The complete galleries are viewable at Olympus E-PM2 Gallery and Sony A7R IV Gallery.

For anybody who is going to carry your camera regularly, you will need to factor in its weight and size. The Olympus E-PM2 offers external dimensions of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") having a weight of 269 grams (0.59 lbs) and the Sony A7R IV has specifications of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") along with a weight of 665 grams (1.47 lbs).

Take a look at the Olympus E-PM2 versus Sony A7R IV in the latest Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you have attached at that time. Here is the front view proportions comparison of the E-PM2 and the A7R IV.

Taking into consideration size and weight, the portability grade of the E-PM2 and A7R IV is 89 and 62 respectively.

Generally, it's hard to envision the contrast in sensor sizing purely by seeing a spec sheet. The graphic below may give you a much better sense of the sensor dimensions in the E-PM2 and A7R IV.

Clearly, both cameras have got different megapixels and different sensor sizing. The E-PM2 because of its smaller sensor will make getting shallower DOF more difficult and the Sony A7R IV will produce greater detail as a result of its extra 45 Megapixels. Greater resolution will also make it easier to crop pics much more aggressively. The older E-PM2 will be behind when it comes to sensor technology.