Pentax K-3 III vs Pentax K-5

Let's take a closer look at the Pentax K-3 III and Pentax K-5, both Advanced DSLR cameras and both of them are created by Pentax. There is a crucial difference among the resolutions of the K-3 III (26MP) and K-5 (16MP) but both cameras offer the same sensor size (APS-C).

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The K-3 III was revealed 10 years after the K-5 which is a fairly serious gap as far as camera tech is concerned. The two cameras have the same body design (Mid-size SLR).

Before delving straight to a thorough comparison, here is a short highlight of how the K-3 III scores vs the K-5 when it comes to portability, imaging, features and an overall score.

This is a sample of the gallery pictures for Pentax K-3 Mark III and Pentax K-5. The full galleries are viewable at Pentax K-3 III Gallery and Pentax K-5 Gallery.

If you're planning to carry around your camera frequently, you have to think about its weight and size. The Pentax K-3 III provides external 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-5 has specifications of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") and a weight of 740 grams (1.63 lbs).

Contrast the Pentax K-3 III and Pentax K-5 in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change based on the lens you have attached at that moment. Below is a front view overall size comparison of the K-3 III against the K-5.

Looking at size and weight, the portability rating of the K-3 III and K-5 is 58 and 60 respectively.

Oftentimes, its difficult to visualize the gap in sensor sizes purely by viewing a spec sheet. The picture underneath should offer you a more clear sense of the sensor dimensions in the K-3 III and K-5.

As you can see, both of those cameras provide the same sensor dimensions but different MP. You should anticipate the Pentax K-3 III to result in extra detail because of its extra 10MP. Greater resolution will enable you to crop photos more aggressively. The more recent K-3 III should have an advantage when it comes to sensor tech.