Olympus E-M10 IV vs Sony A7R III

Here, we will be matching up the Olympus E-M10 IV vs Sony A7R III, one being a Entry-Level Mirrorless and the latter is a Pro Mirrorless by companies Olympus and Sony. There is a crucial difference between the sensor resolutions of the E-M10 IV (20MP) and A7R III (42MP) and the E-M10 IV (Four Thirds) and A7R III (Full frame) offer different sensor dimensions.

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The E-M10 IV was launched 2 years later than the A7R III and that is quite a serious gap as far as tech is concerned. The two cameras feature the same body design (SLR-style mirrorless).

Before diving straight to a detailed comparison, here is a quick highlight of how the E-M10 IV matches up versus the A7R III when considering portability, imaging, features and an overall grade.

The following is a preview of the gallery photos for Olympus OM-D E-M10 IV and Sony Alpha A7R III. The complete galleries are provided at Olympus E-M10 IV Gallery and Sony A7R III Gallery.

If you're looking to lug around your camera, you'll need to factor in its weight and size. The Olympus E-M10 IV provides outside dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") and a weight of 383 grams (0.84 lbs) whilst the Sony A7R III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 657 grams (1.45 lbs).

Analyze the Olympus E-M10 IV vs Sony A7R III in the latest Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you have attached at that moment. Here is a front view overall size comparison of the E-M10 IV against the A7R III.

Taking into consideration size and weight, the portability grade of the E-M10 IV and A7R III is 81 and 63 respectively.

Often, it can be difficult to visualize the difference between sensor measurements only by looking at specs. The visual below might offer you a better sense of the sensor dimensions in the E-M10 IV and A7R III.

As you can plainly see, the two cameras come with different megapixels and different sensor measurements. The E-M10 IV featuring a tinier sensor is going to make shooting shallower depth of field tougher and the Sony A7R III will resolve greater detail utilizing its extra 22MP. Higher resolution will also allow you to crop photographs a good deal more aggressively. The younger E-M10 IV should have an advantage when it comes to sensor innovation.