Pentax WG-3 GPS vs Sony A55

Here is a extended review of the Pentax WG-3 GPS vs Sony A55, former being a Waterproof while the latter is a Entry-Level DSLR by companies Pentax and Sony. The image resolution of the WG-3 GPS (16MP) and the A55 (16MP) is relatively comparable but the WG-3 GPS (1/2.3") and A55 (APS-C) posses totally different sensor size.

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The WG-3 GPS was introduced 2 years later than the A55 and that is a fairly sizable difference as far as camera tech is concerned. Both of these cameras have different body design with the Pentax WG-3 GPS being a Compact camera and the Sony A55 being a Compact SLR camera.

Before getting straight to a comprehensive comparison, here is a brief summary of how the WG-3 GPS scores vs the A55 with regards to portability, imaging, features and an overall rating.

The following is a preview of the gallery photos for Pentax WG-3 GPS & Sony SLT-A55. The whole galleries are available at Pentax WG-3 GPS Gallery & Sony A55 Gallery.

For anybody who is going to carry your camera often, you're going to have to factor its weight and volume. The Pentax WG-3 GPS enjoys exterior dimensions of 125mm x 64mm x 33mm (4.9" x 2.5" x 1.3") and a weight of 238 grams (0.52 lbs) while the Sony A55 has sizing of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") with a weight of 500 grams (1.10 lbs).

Look at the Pentax WG-3 GPS vs Sony A55 in our completely new Camera plus Lens Size Comparison Tool.

Take into account, the weight of an ILC will differ dependant on the lens you select at that time. The following is a front view measurements comparison of the WG-3 GPS versus the A55.

Factoring in size and weight, the portability rating of the WG-3 GPS and A55 is 90 and 67 respectively.

Usually, it's hard to see the difference in sensor sizing only by checking out specs. The graphic underneath will provide you a far better sense of the sensor dimensions in the WG-3 GPS and A55.

All in all, each of these cameras provide the same MP albeit not the same sensor sizing. The WG-3 GPS uses the smaller sensor which should make achieving shallow depth of field more challenging. The newer WG-3 GPS will have a benefit when it comes to sensor innovation.