Pentax K-3 III vs Sigma DP3 Merrill

In this write-up, we will be comparing the Pentax K-3 III vs Sigma DP3 Merrill, former is a Advanced DSLR while the latter is a Large Sensor Compact by rivals Pentax and Sigma. There exists a noticeable gap between the resolutions of the K-3 III (26MP) and DP3 Merrill (15MP) but they come with the same exact sensor measurements (APS-C).

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The K-3 III was introduced 8 years after the DP3 Merrill which is quite a sizable difference as far as technology is concerned. Both of the cameras offer different body type with the Pentax K-3 III being a Mid-size SLR camera and the Sigma DP3 Merrill being a Large Sensor Compact camera.

Before going straight into a thorough comparison, below is a simple view of how the K-3 III matches up against the DP3 Merrill when considering portability, imaging, features and an overall mark.

Below is a preview of the gallery images for Pentax K-3 Mark III & Sigma DP3 Merrill. The whole galleries are viewable at Pentax K-3 III Gallery & Sigma DP3 Merrill Gallery.

If you're going to travel with your camera often, you should factor its weight and size. The Pentax K-3 III provides exterior dimensions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") along with a weight of 820 grams (1.81 lbs) while the Sigma DP3 Merrill has specifications of 122mm x 67mm x 59mm (4.8" x 2.6" x 2.3") having a weight of 330 grams (0.73 lbs).

Analyze the Pentax K-3 III vs Sigma DP3 Merrill in our completely new Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will change depending on the lens you are utilizing at that moment. Below is the front view dimension comparison of the K-3 III vs the DP3 Merrill.

Looking at dimensions and weight, the portability grade of the K-3 III and DP3 Merrill is 58 and 83 respectively.

Quite often, its hard to see the gap between sensor dimensions merely by reviewing specs. The pic below should give you a more clear sense of the sensor dimensions in the K-3 III and DP3 Merrill.

All in all, the 2 cameras offer the same exact sensor sizing albeit not the same MP. You can expect the Pentax K-3 III to deliver more detail using its extra 11MP. Higher resolution will also help you crop pictures a little more aggressively. The younger K-3 III will have a benefit when it comes to sensor tech.