Pentax WG-3 vs Sony A7

On this page, we are comparing the Pentax WG-3 versus Sony A7, former is a Waterproof while the other is a Pro Mirrorless by rivals Pentax and Sony. There exists a sizable gap among the resolutions of the WG-3 (16MP) and A7 (24MP) and the WG-3 (1/2.3") and A7 (Full frame) provide totally different sensor measurements.

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The WG-3 was launched 6 months earlier than the A7 so they are of a similar age. Each of the cameras have different body design with the Pentax WG-3 being a Compact camera and the Sony A7 being a SLR-style mirrorless camera.

Before diving straight to a comprehensive comparison, here is a brief summation of how the WG-3 matches up against the A7 with respect to portability, imaging, features and an overall score.

Following is a sample of the gallery pictures for Pentax WG-3 & Sony Alpha A7. The complete galleries are viewable at Pentax WG-3 Gallery & Sony A7 Gallery.

In case you're intending to carry around your camera frequently, you'll need to consider its weight and size. The Pentax WG-3 features external dimensions of 124mm x 64mm x 33mm (4.9" x 2.5" x 1.3") along with a weight of 230 grams (0.51 lbs) and the Sony A7 has specifications of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") accompanied by a weight of 474 grams (1.04 lbs).

Compare the Pentax WG-3 versus Sony A7 in our newest Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will change dependant on the lens you have attached during that time. Following is a front view over all size comparison of the WG-3 versus the A7.

Using dimensions and weight, the portability grade of the WG-3 and A7 is 90 and 78 respectively.

More often than not, it's difficult to see the difference in sensor sizes simply by researching a spec sheet. The image below should give you a stronger sense of the sensor sizes in the WG-3 and A7.

As you can see, each of these cameras have different megapixel count and different sensor sizes. The WG-3 featuring a smaller sensor will make achieving shallow DOF more challenging and the Sony A7 will render extra detail utilizing its extra 8MP. Greater resolution will let you crop photos a bit more aggressively.