Olympus E-M1 III vs Sony A7R V

On this page, we will be looking at the Olympus E-M1 III versus Sony A7R V, both Pro Mirrorless digital cameras by manufacturers Olympus and Sony. There is a considerable difference between the resolutions of the E-M1 III (20MP) and A7R V (61MP) and the E-M1 III (Four Thirds) and A7R V (Full frame) boast totally different sensor dimensions.

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The E-M1 III was unveiled 3 years prior to the A7R V and that is quite a large difference as far as tech is concerned. Each of these cameras have the same body design (SLR-style mirrorless).

Before we go right into a step-by-step comparison, here is a brief summation of how the E-M1 III scores vs the A7R V with regard to portability, imaging, features and an overall rating.

Below is a preview of the gallery images for Olympus OM-D E-M1 Mark III & Sony Alpha A7R V. The full galleries are provided at Olympus E-M1 III Gallery & Sony A7R V Gallery.

For anybody who is looking to carry your camera, you have to factor its weight and volume. The Olympus E-M1 III has outer measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) whilst the Sony A7R V has sizing of 131mm x 97mm x 82mm (5.2" x 3.8" x 3.2") along with a weight of 723 grams (1.59 lbs).

Check out the Olympus E-M1 III versus Sony A7R V in our completely new Camera plus Lens Size Comparison Tool.

Take into account, the weight of an ILC will differ depending on the lens you use at the time. Underneath is a front view dimension comparison of the E-M1 III versus the A7R V.

Using size and weight, the portability grade of the E-M1 III and A7R V is 67 and 60 respectively.

Often, it is tough to envision the gap between sensor sizing just by reading specs. The visual here might provide you a stronger sense of the sensor sizing in the E-M1 III and A7R V.

All in all, both cameras provide different megapixels and different sensor sizing. The E-M1 III having a tinier sensor will make achieving shallower DOF tougher and the Sony A7R V will offer more detail having an extra 41 Megapixels. Higher resolution will also let you crop pictures more aggressively. The older E-M1 III is going to be disadvantaged with regard to sensor innovation.