Olympus E-M1 III vs Pentax K-5 II

On this page, we will be comparing the Olympus E-M1 III vs Pentax K-5 II, former being a Pro Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Pentax. There exists a noticeable gap between the image resolutions of the E-M1 III (20MP) and K-5 II (16MP) and the E-M1 III (Four Thirds) and K-5 II (APS-C) offer different sensor sizing.

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The E-M1 III was introduced 6 years later than the K-5 II and that is quite a sizable difference as far as technology is concerned. Both the cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-5 II being a Mid-size SLR camera.

Before we go into a complete comparison, here is a brief highlight of how the E-M1 III matches up versus the K-5 II when considering portability, imaging, features and an overall grade.

Following is a preview of the gallery images for Olympus OM-D E-M1 Mark III & Pentax K-5 II. The whole galleries are available at Olympus E-M1 III Gallery & Pentax K-5 II Gallery.

If you're intending to lug around your camera regularly, you will have to think about its weight and dimensions. The Olympus E-M1 III enjoys exterior measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) and the Pentax K-5 II has dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") accompanied by a weight of 760 grams (1.68 lbs).

Look at the Olympus E-M1 III vs Pentax K-5 II in our brand new Camera plus Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will vary based on the lens you select at that moment. Below is a front view size comparison of the E-M1 III compared to the K-5 II.

Considering dimensions and weight, the portability rating of the E-M1 III and K-5 II is 67 and 60 respectively.

More often than not, it is very hard to visualize the contrast between sensor measurements just by checking specifications. The photograph underneath should offer you a more clear sense of the sensor measurements in the E-M1 III and K-5 II.

To sum up, the two cameras provide different megapixels and different sensor measurements. The E-M1 III with its tinier sensor is going to make shooting shallower depth of field trickier and the Olympus E-M1 III will give extra detail using its extra 4 Megapixels. Higher resolution will help you crop pictures more aggressively. The more recent E-M1 III should have an advantage when it comes to sensor innovation.