Pentax W90 vs Sigma SD15

Following is a detailed comparison of the Pentax W90 vs Sigma SD15, one is a Waterproof and the latter is a Advanced DSLR by rivals Pentax and Sigma. There is a huge difference between the sensor resolutions of the W90 (12MP) and SD15 (5MP) and the W90 (1/2.3") and SD15 (APS-C) offer different sensor sizing.

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The W90 was introduced very close to the SD15 which means that they are of a similar generation. Both the cameras have different body design with the Pentax W90 being a Compact camera and the Sigma SD15 being a Mid-size SLR camera.

Before going into a comprehensive comparison, here is a simple summary of how the W90 scores versus the SD15 in the way of portability, imaging, features and an overall score.

Here is a preview of the gallery photos for Pentax Optio W90 and Sigma SD15. The whole galleries are viewable at Pentax W90 Gallery and Sigma SD15 Gallery.

For anyone who is aiming to carry around your camera often, you will want to think about its weight and volume. The Pentax W90 enjoys exterior measurements of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") with a weight of 164 grams (0.36 lbs) while the Sigma SD15 has sizing of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") accompanied by a weight of 750 grams (1.65 lbs).

Examine the Pentax W90 vs Sigma SD15 in the latest Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are employing at the time. Following is a front view dimension comparison of the W90 and the SD15.

Considering size and weight, the portability score of the W90 and SD15 is 94 and 59 respectively.

In many cases, it's hard to picture the gap between sensor sizes purely by reading technical specs. The pic here will provide you a more clear sense of the sensor sizing in the W90 and SD15.

As you can tell, both cameras have different resolutions and different sensor sizes. The W90 having a tinier sensor is going to make shooting shallower DOF harder and the Pentax W90 will offer you more detail using its extra 7MP. Higher resolution will also allow you to crop pictures a bit more aggressively.