Pentax WG-3 GPS vs Sony A7S

Following is a complete review of the Pentax WG-3 GPS and Sony A7S, former is a Waterproof while the latter is a Pro Mirrorless by manufacturers Pentax and Sony. There is a sizable difference between the resolutions of the WG-3 GPS (16MP) and A7S (12MP) and the WG-3 GPS (1/2.3") and A7S (Full frame) provide different sensor dimensions.

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The WG-3 GPS was brought out 8 months before the A7S which means that they are of a similar age. Each of the cameras have different body design with the Pentax WG-3 GPS being a Compact camera and the Sony A7S being a SLR-style mirrorless camera.

Before going into a in-depth comparison, here is a simple view of how the WG-3 GPS scores against the A7S in the way of portability, imaging, features and an overall score.

Here is a preview of the gallery images for Pentax WG-3 GPS & Sony Alpha A7S. The entire galleries are available at Pentax WG-3 GPS Gallery & Sony A7S Gallery.

For anybody who is looking to carry around your camera frequently, you're going to have to factor its weight and volume. The Pentax WG-3 GPS provides outer dimensions of 125mm x 64mm x 33mm (4.9" x 2.5" x 1.3") accompanied by a weight of 238 grams (0.52 lbs) whilst the Sony A7S has sizing of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 489 grams (1.08 lbs).

Check the Pentax WG-3 GPS and Sony A7S in our newest Camera plus Lens Size Comparison Tool.

Do not forget, the weight of an ILC will change depending on the lens you are using at the time. Below is a front view dimension comparison of the WG-3 GPS versus the A7S.

Taking into consideration size and weight, the portability grade of the WG-3 GPS and A7S is 90 and 77 respectively.

Oftentimes, its difficult to visualize the contrast between sensor sizes simply by reading technical specs. The image below should give you a stronger sense of the sensor sizes in the WG-3 GPS and A7S.

As you have seen, both cameras have different resolutions and different sensor sizes. The WG-3 GPS due to its tinier sensor is going to make shooting shallow depth of field more challenging and the Pentax WG-3 GPS will offer you more detail having its extra 4MP. Higher resolution will enable you to crop photographs a bit more aggressively. The more aged WG-3 GPS is going to be disadvantaged with regard to sensor tech.