Pentax WG-10 vs Sony A7R III

Its time to look more closely at the Pentax WG-10 and Sony A7R III, one is a Waterproof and the other is a Pro Mirrorless by manufacturers Pentax and Sony. There exists a huge gap among the sensor resolutions of the WG-10 (14MP) and A7R III (42MP) and the WG-10 (1/2.3") and A7R III (Full frame) offer totally different sensor dimensions.

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The WG-10 was launched 5 years prior to the A7R III which is a fairly significant gap as far as camera technology is concerned. Both the cameras have different body design with the Pentax WG-10 being a Compact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before going straight to a complete comparison, here is a concise overview of how the WG-10 scores versus the A7R III in relation to portability, imaging, features and an overall score.

The following is a sample of the gallery pictures for Pentax WG-10 and Sony Alpha A7R III. The complete galleries are viewable at Pentax WG-10 Gallery and Sony A7R III Gallery.

For anybody who is aiming to carry around your camera, you will want to think about its weight and measurements. The Pentax WG-10 comes with physical dimensions of 116mm x 59mm x 29mm (4.6" x 2.3" x 1.1") and a weight of 167 grams (0.37 lbs) while the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 657 grams (1.45 lbs).

Examine the Pentax WG-10 and Sony A7R III in the new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will change dependant on the lens you are using during that time. Following is a front view dimension comparison of the WG-10 against the A7R III.

Considering dimensions and weight, the portability rating of the WG-10 and A7R III is 93 and 63 respectively.

Sometimes, it is tough to visualise the gap in sensor sizes just by viewing a spec sheet. The picture below may provide you a stronger sense of the sensor sizes in the WG-10 and A7R III.

As you can see, the two cameras have different megapixel count and different sensor sizes. The WG-10 due to its smaller sensor will make getting bokeh trickier and the Sony A7R III will render greater detail utilizing its extra 28MP. Greater resolution will allow you to crop pics a bit more aggressively. The more aged WG-10 will be disadvantaged in sensor tech.