Pentax WG-2 vs Sony A7 III

Its time to examine more closely at the Pentax WG-2 and Sony A7 III, former being a Waterproof while the other is a Pro Mirrorless by manufacturers Pentax and Sony. There exists a large gap between the resolutions of the WG-2 (16MP) and A7 III (24MP) and the WG-2 (1/2.3") and A7 III (Full frame) feature different sensor measurements.

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The WG-2 was brought out 7 years before the A7 III and that is quite a serious difference as far as technology is concerned. Each of the cameras offer different body type with the Pentax WG-2 being a Compact camera and the Sony A7 III being a SLR-style mirrorless camera.

Before getting in to a complete comparison, below is a short summary of how the WG-2 matches up vs the A7 III in the way of portability, imaging, features and an overall rating.

Here is a sample of the gallery pics for Pentax Optio WG-2 & Sony Alpha A7 III. The entire galleries are viewable at Pentax WG-2 Gallery & Sony A7 III Gallery.

If you're going to carry your camera often, you need to factor its weight and size. The Pentax WG-2 enjoys outside dimensions of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") having a weight of 192 grams (0.42 lbs) and the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 650 grams (1.43 lbs).

Check the Pentax WG-2 and Sony A7 III in our completely new Camera plus Lens Size Comparison Tool.

Take into account, the weight of an ILC will vary based on the lens you use at the time. Underneath is the front view measurements comparison of the WG-2 against the A7 III.

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

Quite often, it is very difficult to visualize the difference between sensor sizing just by reviewing a spec sheet. The graphic here should provide you a greater sense of the sensor dimensions in the WG-2 and A7 III.

As you can see, each of these cameras enjoy different megapixels and different sensor sizing. The WG-2 because of its tinier sensor is going to make getting shallower DOF more difficult and the Sony A7 III will offer more detail having its extra 8 Megapixels. Greater resolution will also enable you to crop images far more aggressively. The older WG-2 is going to be disadvantaged in sensor technology.