Olympus E-M5 III vs Pentax K-3 II

Its time to take a deeper look at the Olympus E-M5 III vs Pentax K-3 II, former is a Advanced Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Pentax. The image resolution of the E-M5 III (20MP) and the K-3 II (24MP) is pretty comparable but the E-M5 III (Four Thirds) and K-3 II (APS-C) feature totally different sensor size.

Photography Glossary

The E-M5 III was announced 4 years after the K-3 II which is a fairly big difference as far as camera tech is concerned. Both cameras come with different body type with the Olympus E-M5 III being a SLR-style mirrorless camera and the Pentax K-3 II being a Mid-size SLR camera.

Before delving straight into a detailed comparison, below is a concise overview of how the E-M5 III scores versus the K-3 II in relation to portability, imaging, features and an overall mark.

Following is a preview of the gallery images for Olympus OM-D E-M5 III & Pentax K-3 II. The whole galleries are viewable at Olympus E-M5 III Gallery & Pentax K-3 II Gallery.

If you are aiming to travel with your camera, you need to factor its weight and size. The Olympus E-M5 III comes with physical measurements of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") having a weight of 414 grams (0.91 lbs) whilst the Pentax K-3 II has specifications of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") with a weight of 800 grams (1.76 lbs).

Take a look at the Olympus E-M5 III vs Pentax K-3 II in our newest Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will differ based on the lens you are working with during that time. Below is the front view dimension comparison of the E-M5 III compared to the K-3 II.

Taking into consideration size and weight, the portability score of the E-M5 III and K-3 II is 80 and 59 respectively.

Often, it is very hard to envision the difference in sensor dimensions merely by going through specs. The picture here will provide you a far better sense of the sensor measurements in the E-M5 III and K-3 II.

As you can plainly see, both of those cameras posses different resolutions and different sensor dimensions. The E-M5 III with its smaller sensor will make getting shallower depth of field trickier and the Pentax K-3 II will show extra detail with its extra 4MP. Higher resolution will enable you to crop shots somewhat more aggressively. The younger E-M5 III is going to have an edge when it comes to sensor tech.