Nikon D3100 vs Pentax K-S2

Its time to look more closely at the Nikon D3100 and Pentax K-S2, both Entry-Level DSLR digital cameras by competitors Nikon and Pentax. There is a sizable difference between the image resolutions of the D3100 (14MP) and K-S2 (20MP) but both cameras boast the same sensor dimensions (APS-C).

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The D3100 was manufactured 5 years prior to the K-S2 which is quite a significant difference as far as tech is concerned. Both of these cameras have the same body design (Compact SLR).

Before we go into a full comparison, here is a brief view of how the D3100 scores versus the K-S2 in regards to portability, imaging, features and an overall mark.

Following is a sample of the gallery pictures for Nikon D3100 & Pentax K-S2. The entire galleries are available at Nikon D3100 Gallery & Pentax K-S2 Gallery.

For those who are going to travel with your camera regularly, you're going to have to factor its weight and dimensions. The Nikon D3100 features external dimensions of 124mm x 96mm x 75mm (4.9" x 3.8" x 3.0") with a weight of 505 grams (1.11 lbs) while the Pentax K-S2 has dimensions of 123mm x 91mm x 73mm (4.8" x 3.6" x 2.9") and a weight of 678 grams (1.49 lbs).

Compare the Nikon D3100 and Pentax K-S2 in our completely new Camera plus Lens Size Comparison Tool.

Take into account, the weight of an ILC will change depending on the lens you have at that time. Here is a front view physical size comparison of the D3100 against the K-S2.

Using size and weight, the portability score of the D3100 and K-S2 is 68 and 64 respectively.

Usually, its hard to see the gap between sensor dimensions merely by reviewing specifications. The pic underneath will provide you a stronger sense of the sensor dimensions in the D3100 and K-S2.

To sum up, both of the cameras have the same sensor dimensions but not the same MP. You can anticipate the Pentax K-S2 to deliver greater detail due to its extra 6MP. Greater resolution can also enable you to crop pics a bit more aggressively. The more aged D3100 is going to be behind with regard to sensor innovation.