Pentax WG-2 GPS vs Sony A7 III

The following is a extended assessment of the Pentax WG-2 GPS versus Sony A7 III, one is a Waterproof and the latter is a Pro Mirrorless by brands Pentax and Sony. There exists a sizeable gap between the sensor resolutions of the WG-2 GPS (16MP) and A7 III (24MP) and the WG-2 GPS (1/2.3") and A7 III (Full frame) provide totally different sensor dimensions.

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The WG-2 GPS was released 7 years before the A7 III which is quite a large gap as far as technology is concerned. Both of these cameras feature different body design with the Pentax WG-2 GPS being a Compact camera and the Sony A7 III being a SLR-style mirrorless camera.

Before delving into a full comparison, here is a quick overview of how the WG-2 GPS scores against the A7 III in regards to portability, imaging, features and an overall mark.

Following is a preview of the gallery images for Pentax Optio WG-2 GPS and Sony Alpha A7 III. The complete galleries are viewable at Pentax WG-2 GPS Gallery and Sony A7 III Gallery.

When you are going to travel with your camera regularly, you have to factor in its weight and dimensions. The Pentax WG-2 GPS has outer measurements of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") with a weight of 198 grams (0.44 lbs) while the Sony A7 III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 650 grams (1.43 lbs).

See the Pentax WG-2 GPS versus Sony A7 III in the latest Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you are utilizing at that time. Underneath is a front view dimension comparison of the WG-2 GPS against the A7 III.

Taking into consideration dimensions and weight, the portability score of the WG-2 GPS and A7 III is 91 and 63 respectively.

Typically, it's tough to envision the contrast between sensor dimensions only by going over technical specs. The picture below may offer you a much better sense of the sensor sizing in the WG-2 GPS and A7 III.

As you have seen, each of these cameras feature different megapixel count and different sensor dimensions. The WG-2 GPS featuring a tinier sensor will make getting shallower DOF more challenging and the Sony A7 III will offer more detail as a result of its extra 8 Megapixels. Higher resolution can also make it easier to crop shots way more aggressively. The more aged WG-2 GPS is going to be disadvantaged in sensor innovation.