Pentax WG-2 GPS vs Sony A77

In this write-up, we are looking at the Pentax WG-2 GPS and Sony A77, former being a Waterproof while the other is a Advanced DSLR by companies Pentax and Sony. There is a large difference between the sensor resolutions of the WG-2 GPS (16MP) and A77 (24MP) and the WG-2 GPS (1/2.3") and A77 (APS-C) use totally different sensor sizes.

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The WG-2 GPS was revealed 4 months later than the A77 so they are both of a similar age. Both the cameras offer different body type with the Pentax WG-2 GPS being a Compact camera and the Sony A77 being a Mid-size SLR camera.

Before getting straight into a in depth comparison, below is a concise summation of how the WG-2 GPS matches up vs the A77 with regards to portability, imaging, features and an overall grade.

This is a sample of the gallery pics for Pentax Optio WG-2 GPS & Sony SLT-A77. The full galleries are viewable at Pentax WG-2 GPS Gallery & Sony A77 Gallery.

When you are going to lug around your camera frequently, you're going to have to consider its weight and dimensions. The Pentax WG-2 GPS enjoys physical dimensions of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") and a weight of 198 grams (0.44 lbs) and the Sony A77 has dimensions of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") accompanied by a weight of 732 grams (1.61 lbs).

Look at the Pentax WG-2 GPS and Sony A77 in our completely new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will change based on the lens you use during that time. Below is the front view physical size comparison of the WG-2 GPS compared to the A77.

Taking into account size and weight, the portability rating of the WG-2 GPS and A77 is 91 and 59 respectively.

In many cases, its hard to see the contrast between sensor measurements purely by reading through technical specs. The visual underneath may give you a better sense of the sensor sizes in the WG-2 GPS and A77.

As you can tell, the two cameras enjoy different megapixel count and different sensor measurements. The WG-2 GPS with its tinier sensor will make achieving shallower depth of field more difficult and the Sony A77 will resolve extra detail because of its extra 8 Megapixels. Greater resolution will also let you crop photos far more aggressively.