Olympus E-P3 vs Pentax K20D

Here, we will be comparing the Olympus E-P3 and Pentax K20D, former is a Entry-Level Mirrorless while the latter is a Advanced DSLR by companies Olympus and Pentax. The image resolution of the E-P3 (12MP) and the K20D (15MP) is relatively similar but the E-P3 (Four Thirds) and K20D (APS-C) posses different sensor dimensions.

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The E-P3 was revealed 3 years after the K20D which is quite a big difference as far as technology is concerned. Both cameras feature different body design with the Olympus E-P3 being a Rangefinder-style mirrorless camera and the Pentax K20D being a Mid-size SLR camera.

Before getting into a comprehensive comparison, here is a concise summation of how the E-P3 matches up vs the K20D for portability, imaging, features and an overall score.

Here is a preview of the gallery photos for Olympus PEN E-P3 & Pentax K20D. The full galleries are available at Olympus E-P3 Gallery & Pentax K20D Gallery.

If you are going to carry around your camera, you will need to consider its weight and volume. The Olympus E-P3 has got physical dimensions of 122mm x 69mm x 34mm (4.8" x 2.7" x 1.3") accompanied by a weight of 369 grams (0.81 lbs) and the Pentax K20D has sizing of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 800 grams (1.76 lbs).

Examine the Olympus E-P3 and Pentax K20D in our newest Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will differ dependant on the lens you have chosen at the time. Below is a front view dimension comparison of the E-P3 against the K20D.

Taking into account dimensions and weight, the portability grade of the E-P3 and K20D is 86 and 59 respectively.

Typically, it's tough to picture the difference between sensor sizes merely by reading specs. The picture below will help offer you a much better sense of the sensor sizes in the E-P3 and K20D.

All in all, both of these cameras come with different megapixels and different sensor sizes. The E-P3 using its tinier sensor is going to make getting bokeh harder and the Pentax K20D will offer you more detail because of its extra 3 Megapixels. Higher resolution can also help you crop pictures a good deal more aggressively. The fresher E-P3 provides an edge with regard to sensor tech.