Pentax K-3 III vs Sigma SD9

Lets look closer at the Pentax K-3 III vs Sigma SD9, both Advanced DSLR cameras by rivals Pentax and Sigma. There exists a huge gap among the image resolutions of the K-3 III (26MP) and SD9 (3MP) but both cameras provide the same sensor measurements (APS-C).

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The K-3 III was launched 18 years after the SD9 which is a fairly significant gap as far as camera technology is concerned. Each of these cameras have the same body design (Mid-size SLR).

Before diving right into a comprehensive comparison, here is a concise introduction of how the K-3 III scores vs the SD9 for portability, imaging, features and an overall mark.

Below is a preview of the gallery images for Pentax K-3 Mark III and Sigma SD9. The complete galleries are available at Pentax K-3 III Gallery and Sigma SD9 Gallery.

For anybody who is intending to travel with your camera often, you'll have to think about its weight and size. The Pentax K-3 III features outside dimensions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") accompanied by a weight of 820 grams (1.81 lbs) while the Sigma SD9 has specifications of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") and a weight of 950 grams (2.09 lbs).

See the Pentax K-3 III vs Sigma SD9 in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you are using at the time. Underneath is a front view size comparison of the K-3 III versus the SD9.

Using dimensions and weight, the portability grade of the K-3 III and SD9 is 58 and 54 respectively.

Normally, its hard to picture the difference in sensor dimensions simply by seeing technical specs. The picture below may provide you a clearer sense of the sensor dimensions in the K-3 III and SD9.

As you can tell, each of these cameras have the same sensor dimensions albeit different resolution. You should expect the Pentax K-3 III to show more detail utilizing its extra 23 Megapixels. Higher resolution can also make it easier to crop shots a bit more aggressively. The more modern K-3 III should have a benefit with regard to sensor technology.