Pentax WG-3 GPS vs Sigma SD1 Merrill

Following is a detailed comparison of the Pentax WG-3 GPS versus Sigma SD1 Merrill, one is a Waterproof and the other is a Advanced DSLR by rivals Pentax and Sigma. The image resolution of the WG-3 GPS (16MP) and the SD1 Merrill (15MP) is fairly similar but the WG-3 GPS (1/2.3") and SD1 Merrill (APS-C) boast different sensor dimensions.

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The WG-3 GPS was announced 16 months after the SD1 Merrill making them a generation away from one another. Each of the cameras feature different body design with the Pentax WG-3 GPS being a Compact camera and the Sigma SD1 Merrill being a Mid-size SLR camera.

Before delving straight to a in depth comparison, here is a brief overview of how the WG-3 GPS matches up against the SD1 Merrill with regard to portability, imaging, features and an overall score.

Here is a sample of the gallery pictures for Pentax WG-3 GPS and Sigma SD1 Merrill. The whole galleries are provided at Pentax WG-3 GPS Gallery and Sigma SD1 Merrill Gallery.

In case you're aiming to carry around your camera often, you are going to need to consider its weight and volume. The Pentax WG-3 GPS has outer measurements of 125mm x 64mm x 33mm (4.9" x 2.5" x 1.3") and a weight of 238 grams (0.52 lbs) and the Sigma SD1 Merrill has sizing of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") with a weight of 790 grams (1.74 lbs).

Examine the Pentax WG-3 GPS versus Sigma SD1 Merrill in the all new Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have at the time. Following is a front view physical size comparison of the WG-3 GPS vs the SD1 Merrill.

Taking into consideration dimensions and weight, the portability rating of the WG-3 GPS and SD1 Merrill is 90 and 57 respectively.

More often than not, it is very difficult to picture the gap between sensor sizes just by reviewing specs. The picture below will provide you a greater sense of the sensor measurements in the WG-3 GPS and SD1 Merrill.

All in all, both the cameras feature different resolutions and different sensor sizes. The WG-3 GPS with its tinier sensor is going to make shooting shallower depth of field harder and the Pentax WG-3 GPS will offer you greater detail with its extra 1 Megapixels. Greater resolution will enable you to crop photos way more aggressively. The younger WG-3 GPS provides an edge with regard to sensor innovation.