Olympus E-M5 vs Pentax K-3 II

Its time to look closer at the Olympus E-M5 and Pentax K-3 II, one being a Advanced Mirrorless and the other is a Advanced DSLR by companies Olympus and Pentax. There is a significant difference between the resolutions of the E-M5 (16MP) and K-3 II (24MP) and the E-M5 (Four Thirds) and K-3 II (APS-C) boast different sensor size.

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The E-M5 was released 4 years before the K-3 II and that is quite a sizable gap as far as tech is concerned. Each of these cameras feature different body design with the Olympus E-M5 being a SLR-style mirrorless camera and the Pentax K-3 II being a Mid-size SLR camera.

Before delving right into a full comparison, here is a simple introduction of how the E-M5 grades vs the K-3 II with regards to portability, imaging, features and an overall grade.

Below is a sample of the gallery pics for Olympus OM-D E-M5 and Pentax K-3 II. The complete galleries are available at Olympus E-M5 Gallery and Pentax K-3 II Gallery.

For anybody who is intending to lug around your camera often, you will need to factor its weight and size. The Olympus E-M5 offers physical measurements of 122mm x 89mm x 43mm (4.8" x 3.5" x 1.7") and a weight of 425 grams (0.94 lbs) while 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).

Check the Olympus E-M5 and Pentax K-3 II in the new Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are employing at that time. Underneath is a front view overall size comparison of the E-M5 against the K-3 II.

Taking into account size and weight, the portability rating of the E-M5 and K-3 II is 81 and 59 respectively.

Generally, it can be tough to picture the difference between sensor measurements purely by looking at a spec sheet. The visual below should provide you a clearer sense of the sensor measurements in the E-M5 and K-3 II.

As you can see, the two cameras feature different megapixels and different sensor measurements. The E-M5 because of its tinier sensor is going to make achieving shallower depth of field more difficult and the Pentax K-3 II will resolve more detail as a result of its extra 8MP. Greater resolution will also make it easier to crop photos way more aggressively. The older E-M5 is going to be behind when it comes to sensor innovation.