Olympus E-M1 III vs Pentax K-3

Below is a in-depth comparison of the Olympus E-M1 III versus Pentax K-3, former being a Pro Mirrorless while the other is a Advanced DSLR by companies Olympus and Pentax. The sensor resolution of the E-M1 III (20MP) and the K-3 (24MP) is very similar but the E-M1 III (Four Thirds) and K-3 (APS-C) posses totally different sensor size.

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The E-M1 III was revealed 5 years later than the K-3 and that is quite a significant difference as far as tech is concerned. Each of the cameras feature different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-3 being a Mid-size SLR camera.

Before diving straight to a thorough comparison, here is a brief overview of how the E-M1 III matches up vs the K-3 when it comes to portability, imaging, features and an overall grade.

Here is a sample of the gallery pics for Olympus OM-D E-M1 Mark III & Pentax K-3. The full galleries are provided at Olympus E-M1 III Gallery & Pentax K-3 Gallery.

If you are going to lug around your camera often, you're going to have to consider its weight and dimensions. The Olympus E-M1 III comes with external measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) and the Pentax K-3 has dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") having a weight of 800 grams (1.76 lbs).

Check the Olympus E-M1 III versus Pentax K-3 in our newest Camera plus Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will vary based on the lens you are utilising at that moment. Following is a front view over all size comparison of the E-M1 III vs the K-3.

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

Oftentimes, its tough to envision the gap between sensor measurements simply by reviewing specifications. The visual here may offer you a far better sense of the sensor sizing in the E-M1 III and K-3.

Plainly, both of the cameras feature different megapixel count and different sensor measurements. The E-M1 III using its tinier sensor will make achieving shallow depth of field more challenging and the Pentax K-3 will offer greater detail because of its extra 4 Megapixels. Greater resolution can also let you crop photos way more aggressively. The more modern E-M1 III is going to have a benefit with regard to sensor tech.