Olympus E-M1 II vs Sony A7R III

Lets examine more in depth at the Olympus E-M1 II and Sony A7R III, both Pro Mirrorless cameras by brands Olympus and Sony. There is a substantial difference among the resolutions of the E-M1 II (20MP) and A7R III (42MP) and the E-M1 II (Four Thirds) and A7R III (Full frame) feature totally different sensor sizes.

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The E-M1 II was introduced 13 months before the A7R III making the cameras a generation apart from each other. Each of these cameras come with the identical body type (SLR-style mirrorless).

Before diving in to a thorough comparison, below is a brief overview of how the E-M1 II scores vs the A7R III for portability, imaging, features and an overall rating.

Here is a sample of the gallery pictures for Olympus OM-D E-M1 Mark II & Sony Alpha A7R III. The whole galleries are available at Olympus E-M1 II Gallery & Sony A7R III Gallery.

For anyone who is going to carry your camera often, you will want to take into account its weight and volume. The Olympus E-M1 II provides exterior dimensions of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") accompanied by a weight of 574 grams (1.27 lbs) and the Sony A7R III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs).

Examine the Olympus E-M1 II and Sony A7R III in our brand new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will vary depending on the lens you select at that moment. Following is the front view measurements comparison of the E-M1 II versus the A7R III.

Factoring in size and weight, the portability score of the E-M1 II and A7R III is 68 and 63 respectively.

Often, its hard to see the gap in sensor sizing simply by viewing specifications. The visual here should give you a greater sense of the sensor sizes in the E-M1 II and A7R III.

To sum up, the two cameras have got different resolutions and different sensor sizing. The E-M1 II using its smaller sensor will make getting shallower depth of field more challenging and the Sony A7R III will result in greater detail using its extra 22 Megapixels. Greater resolution will allow you to crop photos much more aggressively. The older E-M1 II will be disadvantaged with regard to sensor innovation.