Nikon S31 vs Pentax K-r

Following is a complete comparison of the Nikon S31 and Pentax K-r, former is a Waterproof while the other is a Entry-Level DSLR by manufacturers Nikon and Pentax. The image resolution of the S31 (10MP) and the K-r (12MP) is very comparable but the S31 (1/2.9") and K-r (APS-C) feature different sensor measurements.

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The S31 was unveiled 2 years after the K-r which is a fairly serious difference as far as camera technology is concerned. Both cameras offer different body type with the Nikon S31 being a Compact camera and the Pentax K-r being a Compact SLR camera.

Before going through a detailed comparison, below is a concise highlight of how the S31 scores vs the K-r with respect to portability, imaging, features and an overall score.

Here is a sample of the gallery pics for Nikon Coolpix S31 & Pentax K-r. The full galleries are provided at Nikon S31 Gallery & Pentax K-r Gallery.

If you are looking to carry around your camera frequently, you will need to factor in its weight and volume. The Nikon S31 provides external dimensions of 105mm x 65mm x 42mm (4.1" x 2.6" x 1.7") with a weight of 185 grams (0.41 lbs) while the Pentax K-r has sizing of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") and a weight of 598 grams (1.32 lbs).

Compare the Nikon S31 and Pentax K-r in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will change depending on the lens you choose at that time. Following is the front view proportions comparison of the S31 vs the K-r.

Looking at dimensions and weight, the portability grade of the S31 and K-r is 90 and 67 respectively.

Typically, its hard to picture the gap in sensor sizes simply by going through specs. The pic here will help provide you a better sense of the sensor dimensions in the S31 and K-r.

All in all, both of those cameras enjoy different resolutions and different sensor sizes. The S31 with its smaller sensor is going to make shooting shallow DOF more difficult and the Pentax K-r will produce greater detail having an extra 2MP. Greater resolution will help you crop images far more aggressively. The newer S31 should have an edge in sensor tech.