Nikon S31 vs Nikon S640

Let's examine more in depth at the Nikon S31 and Nikon S640, one is a Waterproof and the latter is a Small Sensor Compact and both are built by Nikon. The sensor resolution of the S31 (10MP) and the S640 (12MP) is relatively comparable but the S31 (1/2.9") and S640 (1/2.3") use different sensor measurements.

Photography Glossary

The S31 was introduced 3 years after the S640 which is a fairly serious gap as far as camera technology is concerned. Both of these cameras come with the identical body type (Compact).

Before we go through a comprehensive comparison, below is a brief synopsis of how the S31 scores against the S640 with respect to portability, imaging, features and an overall mark.

The following is a preview of the gallery photos for Nikon Coolpix S31 and Nikon Coolpix S640. The whole galleries are viewable at Nikon S31 Gallery and Nikon S640 Gallery.

If you are intending to travel with your camera often, you'll need to factor its weight and volume. The Nikon S31 has got external measurements of 105mm x 65mm x 42mm (4.1" x 2.6" x 1.7") having a weight of 185 grams (0.41 lbs) while the Nikon S640 has sizing of 91mm x 55mm x 21mm (3.6" x 2.2" x 0.8") accompanied by a weight of 130 grams (0.29 lbs).

Check out the Nikon S31 and Nikon S640 in the new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ depending on the lens you have at that time. Following is the front view proportions comparison of the S31 and the S640.

Using dimensions and weight, the portability rating of the S31 and S640 is 90 and 96 respectively.

Typically, its difficult to picture the difference in sensor dimensions purely by checking out technical specs. The image below will provide you a better sense of the sensor sizing in the S31 and S640.

As you can tell, both cameras posses different megapixel count and different sensor dimensions. The S31 having a smaller sensor is going to make shooting shallower DOF trickier and the Nikon S640 will provide extra detail using its extra 2MP. Higher resolution will help you crop photographs somewhat more aggressively. The younger S31 provides an edge in sensor tech.