Olympus E-M10 III vs Pentax K20D

Its time to look a bit more closely at the Olympus E-M10 III versus Pentax K20D, one is a Entry-Level Mirrorless and the latter is a Advanced DSLR by brands Olympus and Pentax. The resolution of the E-M10 III (16MP) and the K20D (15MP) is relatively well matched but the E-M10 III (Four Thirds) and K20D (APS-C) offer different sensor sizes.

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The E-M10 III was revealed 9 years after the K20D which is quite a sizable gap as far as technology is concerned. Both cameras feature different body design with the Olympus E-M10 III being a SLR-style mirrorless camera and the Pentax K20D being a Mid-size SLR camera.

Before going right into a complete comparison, here is a quick summation of how the E-M10 III matches up against the K20D in terms of portability, imaging, features and an overall mark.

This is a preview of the gallery photos for Olympus OM-D E-M10 Mark III and Pentax K20D. The full galleries are available at Olympus E-M10 III Gallery and Pentax K20D Gallery.

If you're planning to travel with your camera often, you have to factor in its weight and dimensions. The Olympus E-M10 III has got external measurements of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") having a weight of 410 grams (0.90 lbs) and the Pentax K20D has dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") along with a weight of 800 grams (1.76 lbs).

Compare the Olympus E-M10 III versus Pentax K20D in the latest Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ depending on the lens you use at that time. Following is a front view measurement comparison of the E-M10 III versus the K20D.

Using dimensions and weight, the portability score of the E-M10 III and K20D is 80 and 59 respectively.

More often than not, it is very hard to visualize the difference between sensor dimensions simply by checking technical specs. The image here should offer you a greater sense of the sensor measurements in the E-M10 III and K20D.

As you can tell, the 2 cameras feature different resolutions and different sensor dimensions. The E-M10 III using its tinier sensor is going to make achieving shallower DOF harder and the Olympus E-M10 III will give you extra detail because of its extra 1MP. Higher resolution will also allow you to crop shots way more aggressively. The more recent E-M10 III should have an advantage with regard to sensor innovation.