Pentax WG-3 vs Sony A7S III

Following is a complete overview of the Pentax WG-3 and Sony A7S III, former is a Waterproof while the latter is a Pro Mirrorless by rivals Pentax and Sony. There exists a considerable gap among the image resolutions of the WG-3 (16MP) and A7S III (12MP) and the WG-3 (1/2.3") and A7S III (Full frame) enjoy different sensor dimensions.

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The WG-3 was revealed 8 years before the A7S III which is a fairly large difference as far as camera technology is concerned. Both of the cameras offer different body type with the Pentax WG-3 being a Compact camera and the Sony A7S III being a SLR-style mirrorless camera.

Before getting straight into a more detailed comparison, below is a brief synopsis of how the WG-3 grades versus the A7S III with regard to portability, imaging, features and an overall score.

Here is a preview of the gallery images for Pentax WG-3 & Sony Alpha A7S III. The full galleries are viewable at Pentax WG-3 Gallery & Sony A7S III Gallery.

If you're looking to carry around your camera often, you'll have to factor its weight and measurements. The Pentax WG-3 provides outer measurements of 124mm x 64mm x 33mm (4.9" x 2.5" x 1.3") and a weight of 230 grams (0.51 lbs) while the Sony A7S III has proportions of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).

Take a look at the Pentax WG-3 and Sony A7S III in our completely new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary based on the lens you are utilizing at that moment. The following is the front view dimensions comparison of the WG-3 against the A7S III.

Taking into account dimensions and weight, the portability score of the WG-3 and A7S III is 90 and 61 respectively.

Normally, its difficult to visualize the difference in sensor sizes purely by viewing specifications. The picture here will help provide you a far better sense of the sensor measurements in the WG-3 and A7S III.

Plainly, both of the cameras offer different resolutions and different sensor sizes. The WG-3 with its smaller sensor is going to make achieving shallow depth of field more difficult and the Pentax WG-3 will result in more detail because of its extra 4MP. Higher resolution will enable you to crop photographs a little more aggressively. The more aged WG-3 will be behind in sensor tech.