Olympus E-M1 III vs Pentax K-3 II

Its time to take a deeper look at the Olympus E-M1 III vs Pentax K-3 II, one being a Pro Mirrorless and the other is a Advanced DSLR by brands Olympus and Pentax. The resolution of the E-M1 III (20MP) and the K-3 II (24MP) is very similar but the E-M1 III (Four Thirds) and K-3 II (APS-C) have totally different sensor sizes.

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The E-M1 III was announced 4 years later than the K-3 II and that is quite a significant gap as far as technology is concerned. Both cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-3 II being a Mid-size SLR camera.

Before diving straight to a thorough comparison, here is a short view of how the E-M1 III matches up versus the K-3 II for portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Olympus OM-D E-M1 Mark III and Pentax K-3 II. The whole galleries are available at Olympus E-M1 III Gallery and Pentax K-3 II Gallery.

For anyone who is going to carry your camera often, you will need to factor its weight and proportions. The Olympus E-M1 III comes with outer measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) whilst the Pentax K-3 II has measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") with a weight of 800 grams (1.76 lbs).

Check out the Olympus E-M1 III vs Pentax K-3 II in the latest Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will vary depending on the lens you are employing at that moment. Here is a front view overall size comparison of the E-M1 III compared to the K-3 II.

Taking into account dimensions and weight, the portability rating of the E-M1 III and K-3 II is 67 and 59 respectively.

More often than not, its difficult to see the gap between sensor sizing only by going over specifications. The graphic here should give you a better sense of the sensor sizing in the E-M1 III and K-3 II.

To sum up, both of these cameras provide different megapixel count and different sensor sizing. The E-M1 III with its tinier sensor will make getting shallow DOF more difficult and the Pentax K-3 II will offer you greater detail with its extra 4 Megapixels. Greater resolution will also help you crop pics more aggressively. The more recent E-M1 III is going to have a benefit in sensor tech.