Nikon S640 vs Sigma DP2

Its time to look closer at the Nikon S640 and Sigma DP2, one being a Small Sensor Compact and the other is a Large Sensor Compact by manufacturers Nikon and Sigma. There is a huge difference between the sensor resolutions of the S640 (12MP) and DP2 (5MP) and the S640 (1/2.3") and DP2 (APS-C) enjoy different sensor measurements.

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The S640 was manufactured around the same time to the DP2 which means that they are both of a similar generation. Both of the cameras come with different body type with the Nikon S640 being a Compact camera and the Sigma DP2 being a Large Sensor Compact camera.

Before going straight into a complete comparison, below is a concise summation of how the S640 grades against the DP2 in regards to portability, imaging, features and an overall grade.

Following is a sample of the gallery pics for Nikon Coolpix S640 and Sigma DP2. The entire galleries are viewable at Nikon S640 Gallery and Sigma DP2 Gallery.

If you're going to lug around your camera regularly, you will want to consider its weight and measurements. The Nikon S640 provides outside dimensions of 91mm x 55mm x 21mm (3.6" x 2.2" x 0.8") with a weight of 130 grams (0.29 lbs) while the Sigma DP2 has proportions of 113mm x 60mm x 56mm (4.4" x 2.4" x 2.2") with a weight of 280 grams (0.62 lbs).

Check the Nikon S640 and Sigma DP2 in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change based on the lens you have at that time. Following is the front view physical size comparison of the S640 and the DP2.

Looking at size and weight, the portability score of the S640 and DP2 is 96 and 86 respectively.

In many cases, it is very hard to picture the gap between sensor measurements purely by reviewing specs. The graphic here should give you a far better sense of the sensor dimensions in the S640 and DP2.

All in all, both cameras have got different resolutions and different sensor measurements. The S640 because of its tinier sensor is going to make getting bokeh more challenging and the Nikon S640 will offer extra detail due to its extra 7 Megapixels. Greater resolution will also allow you to crop photos much more aggressively.