Pentax WG-3 vs Sony A7S

Here, we are matching up the Pentax WG-3 versus Sony A7S, one is a Waterproof and the other is a Pro Mirrorless by rivals Pentax and Sony. There exists a sizeable gap between the sensor resolutions of the WG-3 (16MP) and A7S (12MP) and the WG-3 (1/2.3") and A7S (Full frame) provide totally different sensor dimensions.

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The WG-3 was launched 8 months before the A7S and they are of a similar generation. Both the cameras feature different body design with the Pentax WG-3 being a Compact camera and the Sony A7S being a SLR-style mirrorless camera.

Before delving into a detailed comparison, here is a simple highlight of how the WG-3 scores against the A7S in regards to portability, imaging, features and an overall mark.

This is a sample of the gallery pics for Pentax WG-3 and Sony Alpha A7S. The complete galleries are viewable at Pentax WG-3 Gallery and Sony A7S Gallery.

If you are going to travel with your camera often, you'll have to consider its weight and volume. The Pentax WG-3 enjoys external dimensions of 124mm x 64mm x 33mm (4.9" x 2.5" x 1.3") with a weight of 230 grams (0.51 lbs) and the Sony A7S has sizing of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") with a weight of 489 grams (1.08 lbs).

Examine the Pentax WG-3 versus Sony A7S in the latest Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change depending on the lens you have attached at that time. Here is a front view dimensions comparison of the WG-3 and the A7S.

Taking into consideration dimensions and weight, the portability score of the WG-3 and A7S is 90 and 77 respectively.

More often than not, it is hard to see the gap between sensor dimensions only by reading technical specs. The picture here might provide you a far better sense of the sensor dimensions in the WG-3 and A7S.

As you have seen, the 2 cameras come with different megapixel count and different sensor dimensions. The WG-3 featuring a tinier sensor will make shooting shallower DOF trickier and the Pentax WG-3 will offer you extra detail utilizing its extra 4 Megapixels. Greater resolution can also enable you to crop pics a good deal more aggressively. The more aged WG-3 is going to be disadvantaged in sensor technology.