Pentax K-3 III vs Pentax K-S1

Below, we will be evaluating the Pentax K-3 III vs Pentax K-S1, both Advanced DSLR cameras and they are both designed by Pentax. There exists a noticeable gap among the resolutions of the K-3 III (26MP) and K-S1 (20MP) but they enjoy the exact same sensor sizes (APS-C).

Meta to Introduce 'AI-Generated' Labels for Media starting next month

The K-3 III was unveiled 6 years later than the K-S1 and that is a fairly sizable difference as far as camera technology is concerned. Both of these cameras come with the identical body type (Mid-size SLR).

Before diving straight into a more detailed comparison, below is a quick synopsis of how the K-3 III grades against the K-S1 with regards to portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Pentax K-3 Mark III & Pentax K-S1. The full galleries are provided at Pentax K-3 III Gallery & Pentax K-S1 Gallery.

If you're planning to carry your camera often, you have to take into account its weight and measurements. The Pentax K-3 III provides exterior dimensions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") having a weight of 820 grams (1.81 lbs) and the Pentax K-S1 has proportions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") having a weight of 558 grams (1.23 lbs).

Analyze the Pentax K-3 III vs Pentax K-S1 in our completely new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary depending on the lens you have chosen at that time. Below is the front view measurement comparison of the K-3 III versus the K-S1.

Taking into account dimensions and weight, the portability score of the K-3 III and K-S1 is 58 and 69 respectively.

Typically, it is very difficult to picture the contrast in sensor sizing merely by going through technical specs. The graphic here might give you a more clear sense of the sensor dimensions in the K-3 III and K-S1.

As you can tell, both cameras have got the exact same sensor measurements albeit different MP. You can count on the Pentax K-3 III to show more detail having an extra 6 Megapixels. Higher resolution will help you crop pictures much more aggressively. The newer K-3 III provides an edge when it comes to sensor innovation.