Pentax WG-2 GPS vs Sigma SD1

Here, we will be contrasting the Pentax WG-2 GPS and Sigma SD1, former being a Waterproof while the latter is a Advanced DSLR by brands Pentax and Sigma. The sensor resolution of the WG-2 GPS (16MP) and the SD1 (15MP) is relatively close but the WG-2 GPS (1/2.3") and SD1 (APS-C) offer totally different sensor sizing.

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The WG-2 GPS was manufactured 17 months later than the SD1 which makes them a generation apart from one another. The two cameras feature different body design with the Pentax WG-2 GPS being a Compact camera and the Sigma SD1 being a Mid-size SLR camera.

Before getting into a more detailed comparison, here is a concise synopsis of how the WG-2 GPS grades vs the SD1 in terms of portability, imaging, features and an overall grade.

Here is a preview of the gallery photos for Pentax Optio WG-2 GPS & Sigma SD1. The entire galleries are viewable at Pentax WG-2 GPS Gallery & Sigma SD1 Gallery.

When you are looking to lug around your camera, you should consider its weight and measurements. The Pentax WG-2 GPS provides outside measurements of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") along with a weight of 198 grams (0.44 lbs) while the Sigma SD1 has proportions of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") and a weight of n/a grams (0.00 lbs).

Look at the Pentax WG-2 GPS and Sigma SD1 in our brand new Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change depending on the lens you use at that time. The following is a front view dimensions comparison of the WG-2 GPS versus the SD1.

Taking into consideration dimensions and weight, the portability grade of the WG-2 GPS and SD1 is 91 and 77 respectively.

More often than not, its hard to envision the gap in sensor measurements purely by researching a spec sheet. The graphic below may offer you a stronger sense of the sensor sizing in the WG-2 GPS and SD1.

Clearly, both of those cameras feature different resolutions and different sensor measurements. The WG-2 GPS featuring a smaller sensor will make shooting shallow DOF more difficult and the Pentax WG-2 GPS will render extra detail due to its extra 1MP. Higher resolution will also make it easier to crop shots way more aggressively. The more recent WG-2 GPS will have a benefit when it comes to sensor tech.