OM System OM-5 vs Sony A7R III

Below, we are matching up the OM System OM-5 versus Sony A7R III, former is a Advanced Mirrorless while the other is a Pro Mirrorless by rivals Olympus and Sony. There is a substantial difference among the image resolutions of the OM System OM-5 (20MP) and A7R III (42MP) and the OM System OM-5 (Four Thirds) and A7R III (Full frame) feature totally different sensor sizes.

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The OM System OM-5 was manufactured 5 years after the A7R III which is a fairly big difference as far as camera tech is concerned. Both the cameras come with the identical body type (SLR-style mirrorless).

Before diving straight into a in depth comparison, below is a short overview of how the OM System OM-5 grades vs the A7R III in relation to portability, imaging, features and an overall mark.

The following is a sample of the gallery pics for OM System OM-5 & Sony Alpha A7R III. The entire galleries are viewable at OM System OM-5 Gallery & Sony A7R III Gallery.

For those who are going to travel with your camera often, you will have to factor in its weight and measurements. The OM System OM-5 has got external dimensions of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") along with a weight of 414 grams (0.91 lbs) and the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 657 grams (1.45 lbs).

Examine the OM System OM-5 versus Sony A7R III in our newest Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will change based on the lens you have at that time. Below is the front view measurements comparison of the OM System OM-5 versus the A7R III.

Factoring in size and weight, the portability score of the OM System OM-5 and A7R III is 80 and 63 respectively.

In many cases, it is very tough to see the contrast in sensor dimensions merely by looking through specs. The image here may offer you a far better sense of the sensor dimensions in the OM System OM-5 and A7R III.

As you can plainly see, both cameras posses different megapixel count and different sensor dimensions. The OM System OM-5 because of its smaller sensor will make shooting shallower DOF trickier and the Sony A7R III will render extra detail due to its extra 22MP. Greater resolution can also allow you to crop images somewhat more aggressively. The newer OM System OM-5 will have an edge with regard to sensor technology.