Olympus 1s vs Sony A7R III

On this page, we are analyzing the Olympus 1s vs Sony A7R III, former being a Small Sensor Superzoom while the other is a Pro Mirrorless by companies Olympus and Sony. There is a considerable difference among the image resolutions of the 1s (12MP) and A7R III (42MP) and the 1s (1/1.7") and A7R III (Full frame) have different sensor sizing.

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The 1s was unveiled 3 years before the A7R III and that is a fairly large difference as far as camera tech is concerned. Both of these cameras have different body design with the Olympus 1s being a SLR-like (bridge) camera and the Sony A7R III being a SLR-style mirrorless camera.

Before we go into a in-depth comparison, here is a quick introduction of how the 1s grades against the A7R III in relation to portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Olympus Stylus 1s & Sony Alpha A7R III. The full galleries are viewable at Olympus 1s Gallery & Sony A7R III Gallery.

In case you're aiming to carry your camera often, you are going to need to consider its weight and proportions. The Olympus 1s has got outer measurements of 116mm x 87mm x 57mm (4.6" x 3.4" x 2.2") having a weight of 402 grams (0.89 lbs) while the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs).

Analyze the Olympus 1s vs Sony A7R III in our newest Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will differ depending on the lens you are using during that time. The following is a front view over all size comparison of the 1s versus the A7R III.

Looking at size and weight, the portability score of the 1s and A7R III is 79 and 63 respectively.

Generally, it's hard to visualize the gap in sensor sizing purely by viewing a spec sheet. The photograph underneath might provide you a more clear sense of the sensor sizing in the 1s and A7R III.

As you can see, both the cameras have different megapixels and different sensor sizing. The 1s with its smaller sensor is going to make achieving shallower DOF more difficult and the Sony A7R III will result in more detail having an extra 30MP. Greater resolution can also help you crop photos a bit more aggressively. The older 1s will be behind in sensor tech.