Pentax WG-3 vs Sony A7R II

On this page, we are matching up the Pentax WG-3 and Sony A7R II, one being a Waterproof and the other is a Pro Mirrorless by brands Pentax and Sony. There exists a huge gap between the sensor resolutions of the WG-3 (16MP) and A7R II (42MP) and the WG-3 (1/2.3") and A7R II (Full frame) provide different sensor sizes.

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The WG-3 was brought out 23 months prior to the A7R II making them a generation apart from one another. Each of these cameras have different body design with the Pentax WG-3 being a Compact camera and the Sony A7R II being a SLR-style mirrorless camera.

Before diving straight to a complete comparison, here is a short highlight of how the WG-3 grades versus the A7R II with respect to portability, imaging, features and an overall rating.

Below is a sample of the gallery pics for Pentax WG-3 and Sony Alpha A7R II. The entire galleries are provided at Pentax WG-3 Gallery and Sony A7R II Gallery.

In case you're looking to carry your camera often, you should factor its weight and volume. The Pentax WG-3 has got exterior measurements of 124mm x 64mm x 33mm (4.9" x 2.5" x 1.3") with a weight of 230 grams (0.51 lbs) whilst the Sony A7R II has sizing of 127mm x 96mm x 60mm (5.0" x 3.8" x 2.4") accompanied by a weight of 625 grams (1.38 lbs).

See the Pentax WG-3 and Sony A7R II in the new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are working with during that time. Below is a front view physical size comparison of the WG-3 and the A7R II.

Taking into consideration dimensions and weight, the portability grade of the WG-3 and A7R II is 90 and 68 respectively.

Quite often, it is very hard to visualize the contrast between sensor sizing just by reviewing specifications. The visual below will provide you a much better sense of the sensor sizing in the WG-3 and A7R II.

To sum up, each of the cameras provide different megapixels and different sensor sizing. The WG-3 featuring a tinier sensor is going to make shooting shallow DOF more difficult and the Sony A7R II will deliver more detail having its extra 26 Megapixels. Greater resolution can also let you crop images more aggressively. The older WG-3 is going to be behind when it comes to sensor technology.