Sigma SD1 vs Sony W320

Below, we are matching up the Sigma SD1 and Sony W320, one being a Advanced DSLR and the other is a Ultracompact by competitors Sigma and Sony. The image resolution of the SD1 (15MP) and the W320 (14MP) is fairly similar but the SD1 (APS-C) and W320 (1/2.3") enjoy different sensor measurements.

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The SD1 was released 9 months later than the W320 and they are both of a similar generation. The two cameras come with different body type with the Sigma SD1 being a Mid-size SLR camera and the Sony W320 being a Ultracompact camera.

Before delving straight into a thorough comparison, below is a quick introduction of how the SD1 grades against the W320 for portability, imaging, features and an overall grade.

Following is a sample of the gallery pictures for Sigma SD1 and Sony Cyber-shot DSC-W320. The complete galleries are provided at Sigma SD1 Gallery and Sony W320 Gallery.

For anyone who is going to lug around your camera often, you have to consider its weight and dimensions. The Sigma SD1 enjoys physical measurements of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") along with a weight of n/a grams (0.00 lbs) while the Sony W320 has dimensions of 93mm x 52mm x 17mm (3.7" x 2.0" x 0.7") and a weight of 117 grams (0.26 lbs).

See the Sigma SD1 and Sony W320 in the all new Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will differ depending on the lens you are working with at the time. Below is the front view over all size comparison of the SD1 vs the W320.

Considering size and weight, the portability rating of the SD1 and W320 is 77 and 97 respectively.

Usually, it's difficult to picture the gap between sensor measurements simply by reviewing technical specs. The graphic here might offer you a greater sense of the sensor measurements in the SD1 and W320.

As you have seen, both the cameras have got different megapixels and different sensor measurements. The SD1 due to its larger sensor is going to make achieving shallower depth of field easier and the Sigma SD1 will offer extra detail as a result of its extra 1MP. Greater resolution will allow you to crop images much more aggressively. The more modern SD1 should have a benefit with regard to sensor innovation.