Pentax K-S1 vs Pentax K100D

Let's look a little more closely at the Pentax K-S1 and Pentax K100D, one being a Advanced DSLR and the other is a Entry-Level DSLR and both of them are offered by Pentax. There exists a huge gap between the sensor resolutions of the K-S1 (20MP) and K100D (6MP) but they use the exact same sensor sizes (APS-C).

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The K-S1 was unveiled 7 years later than the K100D and that is quite a significant gap as far as technology is concerned. Each of the cameras come with different body type with the Pentax K-S1 being a Mid-size SLR camera and the Pentax K100D being a Compact SLR camera.

Before we go in to a full comparison, below is a brief synopsis of how the K-S1 scores versus the K100D with regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Pentax K-S1 and Pentax K100D. The full galleries are provided at Pentax K-S1 Gallery and Pentax K100D Gallery.

For anyone who is intending to carry your camera, you'll need to think about its weight and measurements. The Pentax K-S1 has got external dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") having a weight of 558 grams (1.23 lbs) while the Pentax K100D has proportions of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") with a weight of 660 grams (1.46 lbs).

Compare the Pentax K-S1 and Pentax K100D in the all new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ depending on the lens you have attached at that time. Below is the front view measurements comparison of the K-S1 and the K100D.

Taking into consideration dimensions and weight, the portability grade of the K-S1 and K100D is 69 and 64 respectively.

More often than not, it can be hard to see the difference between sensor sizing simply by going over specs. The photograph underneath may give you a more clear sense of the sensor sizes in the K-S1 and K100D.

As you can plainly see, each of these cameras have got the exact same sensor measurements but not the same MP. You should expect to see the Pentax K-S1 to offer more detail having an extra 14MP. Greater resolution can also enable you to crop images much more aggressively. The fresher K-S1 is going to have a benefit in sensor tech.