Sigma SD15 vs Sony W310

Its time to look a little more closely at the Sigma SD15 and Sony W310, one is a Advanced DSLR and the other is a Ultracompact by manufacturers Sigma and Sony. There is a sizeable difference between the resolutions of the SD15 (5MP) and W310 (12MP) and the SD15 (APS-C) and W310 (1/2.3") come with totally different sensor dimensions.

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The SD15 was unveiled 2 months after the W310 which means that they are of a similar generation. Each of the cameras come with different body type with the Sigma SD15 being a Mid-size SLR camera and the Sony W310 being a Ultracompact camera.

Before delving straight into a step-by-step comparison, below is a quick summation of how the SD15 matches up versus the W310 for portability, imaging, features and an overall score.

Below is a sample of the gallery pics for Sigma SD15 and Sony Cyber-shot DSC-W310. The full galleries are available at Sigma SD15 Gallery and Sony W310 Gallery.

For those who are planning to carry around your camera frequently, you'll have to take into account its weight and size. The Sigma SD15 offers outside measurements of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") and a weight of 750 grams (1.65 lbs) whilst the Sony W310 has specifications of 95mm x 55mm x 19mm (3.7" x 2.2" x 0.7") and a weight of 137 grams (0.30 lbs).

Check the Sigma SD15 and Sony W310 in the new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will vary based on the lens you have at that moment. Below is the front view over all size comparison of the SD15 compared to the W310.

Taking into account size and weight, the portability score of the SD15 and W310 is 59 and 96 respectively.

Oftentimes, it can be hard to envision the gap between sensor sizes merely by checking a spec sheet. The image here might provide you a far better sense of the sensor measurements in the SD15 and W310.

Clearly, each of these cameras have got different megapixel count and different sensor sizes. The SD15 using its larger sensor will make getting shallower DOF easier and the Sony W310 will give you more detail having an extra 7 Megapixels. Greater resolution will allow you to crop photos much more aggressively.