Pentax WG-3 GPS vs Sony A7 III

Let's look a little more closely at the Pentax WG-3 GPS vs Sony A7 III, former is a Waterproof while the other is a Pro Mirrorless by companies Pentax and Sony. There is a considerable difference between the sensor resolutions of the WG-3 GPS (16MP) and A7 III (24MP) and the WG-3 GPS (1/2.3") and A7 III (Full frame) enjoy different sensor dimensions.

Photography Glossary

The WG-3 GPS was brought out 5 years before the A7 III which is quite a large difference as far as tech is concerned. Both of the cameras offer different body type with the Pentax WG-3 GPS being a Compact camera and the Sony A7 III being a SLR-style mirrorless camera.

Before we go through a step-by-step comparison, below is a concise view of how the WG-3 GPS scores against the A7 III when considering portability, imaging, features and an overall mark.

Following is a sample of the gallery pics for Pentax WG-3 GPS & Sony Alpha A7 III. The entire galleries are available at Pentax WG-3 GPS Gallery & Sony A7 III Gallery.

If you are looking to travel with your camera regularly, you'll have to take into account its weight and proportions. The Pentax WG-3 GPS comes with exterior dimensions of 125mm x 64mm x 33mm (4.9" x 2.5" x 1.3") with a weight of 238 grams (0.52 lbs) and the Sony A7 III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 650 grams (1.43 lbs).

Look at the Pentax WG-3 GPS vs Sony A7 III in our brand new Camera plus Lens Size Comparison Tool.

Do not forget, the weight of an ILC will vary depending on the lens you use at the time. The following is the front view sizing comparison of the WG-3 GPS versus the A7 III.

Factoring in size and weight, the portability grade of the WG-3 GPS and A7 III is 90 and 63 respectively.

Oftentimes, it can be hard to visualize the difference between sensor dimensions only by going over technical specs. The image here might provide you a stronger sense of the sensor sizes in the WG-3 GPS and A7 III.

As you have seen, both the cameras offer different megapixels and different sensor dimensions. The WG-3 GPS featuring a tinier sensor is going to make achieving shallower depth of field harder and the Sony A7 III will offer greater detail having its extra 8MP. Greater resolution can also make it easier to crop images a little more aggressively. The more aged WG-3 GPS is going to be disadvantaged in sensor tech.