Pentax WG-3 GPS vs Sony A7

In this write-up, we are analyzing the Pentax WG-3 GPS versus Sony A7, one is a Waterproof and the other is a Pro Mirrorless by rivals Pentax and Sony. There is a significant difference between the sensor resolutions of the WG-3 GPS (16MP) and A7 (24MP) and the WG-3 GPS (1/2.3") and A7 (Full frame) use totally different sensor sizes.

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The WG-3 GPS was launched 6 months earlier than the A7 so they are of a similar generation. The two cameras offer different body type with the Pentax WG-3 GPS being a Compact camera and the Sony A7 being a SLR-style mirrorless camera.

Before delving through a thorough comparison, below is a short synopsis of how the WG-3 GPS matches up against the A7 when considering portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Pentax WG-3 GPS and Sony Alpha A7. The complete galleries are provided at Pentax WG-3 GPS Gallery and Sony A7 Gallery.

For those who are intending to travel with your camera, you will have to factor in its weight and measurements. The Pentax WG-3 GPS has external measurements of 125mm x 64mm x 33mm (4.9" x 2.5" x 1.3") with a weight of 238 grams (0.52 lbs) while the Sony A7 has proportions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 474 grams (1.04 lbs).

Contrast the Pentax WG-3 GPS versus Sony A7 in the all new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will change dependant on the lens you are utilizing at that moment. The following is the front view sizing comparison of the WG-3 GPS versus the A7.

Factoring in size and weight, the portability grade of the WG-3 GPS and A7 is 90 and 78 respectively.

Often, it is very difficult to visualise the gap between sensor dimensions merely by going over a spec sheet. The image below may give you a better sense of the sensor measurements in the WG-3 GPS and A7.

Clearly, the two cameras offer different megapixels and different sensor dimensions. The WG-3 GPS because of its tinier sensor will make shooting shallow DOF harder and the Sony A7 will offer extra detail utilizing its extra 8 Megapixels. Greater resolution will enable you to crop photos a little more aggressively.