Pentax WG-3 GPS vs Sigma SD14

In this article, we are analyzing the Pentax WG-3 GPS and Sigma SD14, one being a Waterproof and the other is a Advanced DSLR by rivals Pentax and Sigma. There is a significant difference among the image resolutions of the WG-3 GPS (16MP) and SD14 (5MP) and the WG-3 GPS (1/2.3") and SD14 (APS-C) feature totally different sensor dimensions.

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The WG-3 GPS was revealed 6 years later than the SD14 and that is a fairly sizable gap as far as camera tech is concerned. Both the cameras offer different body type with the Pentax WG-3 GPS being a Compact camera and the Sigma SD14 being a Mid-size SLR camera.

Before going straight into a full comparison, below is a quick highlight of how the WG-3 GPS grades against the SD14 in regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Pentax WG-3 GPS and Sigma SD14. The full galleries are viewable at Pentax WG-3 GPS Gallery and Sigma SD14 Gallery.

For anyone who is planning to carry your camera regularly, you'll have to factor its weight and dimensions. The Pentax WG-3 GPS features physical measurements 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 Sigma SD14 has dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") with a weight of 750 grams (1.65 lbs).

Check the Pentax WG-3 GPS and Sigma SD14 in the latest Camera and Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are working with during that time. Following is the front view overall size comparison of the WG-3 GPS compared to the SD14.

Factoring in size and weight, the portability rating of the WG-3 GPS and SD14 is 90 and 59 respectively.

Generally, it is difficult to envision the gap in sensor sizing only by researching technical specs. The graphic here may offer you a far better sense of the sensor sizing in the WG-3 GPS and SD14.

As you have seen, both the cameras offer different resolutions and different sensor sizing. The WG-3 GPS using its smaller sensor will make shooting shallow DOF more challenging and the Pentax WG-3 GPS will provide you with extra detail because of its extra 11 Megapixels. Greater resolution can also let you crop images a little more aggressively. The younger WG-3 GPS is going to have an advantage with regard to sensor technology.