Olympus E-1 vs Pentax K-01

On this page, we will be analyzing the Olympus E-1 versus Pentax K-01, former is a Pro DSLR while the latter is a Entry-Level Mirrorless by companies Olympus and Pentax. There exists a substantial gap between the image resolutions of the E-1 (5MP) and K-01 (16MP) and the E-1 (Four Thirds) and K-01 (APS-C) have different sensor sizing.

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The E-1 was unveiled 9 years earlier than the K-01 which is quite a big difference as far as technology is concerned. Both of these cameras have different body design with the Olympus E-1 being a Large SLR camera and the Pentax K-01 being a SLR-style mirrorless camera.

Before we go into a step-by-step comparison, here is a concise summary of how the E-1 grades versus the K-01 in regards to portability, imaging, features and an overall score.

Following is a preview of the gallery images for Olympus E-1 & Pentax K-01. The full galleries are provided at Olympus E-1 Gallery & Pentax K-01 Gallery.

For those who are aiming to carry around your camera, you will need to factor in its weight and size. The Olympus E-1 enjoys physical dimensions of 141mm x 104mm x 81mm (5.6" x 4.1" x 3.2") and a weight of 735 grams (1.62 lbs) and the Pentax K-01 has specifications of 122mm x 79mm x 58mm (4.8" x 3.1" x 2.3") with a weight of 561 grams (1.24 lbs).

Check out the Olympus E-1 versus Pentax K-01 in our brand new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary depending on the lens you are employing at that time. Underneath is a front view dimensions comparison of the E-1 versus the K-01.

Taking into account dimensions and weight, the portability rating of the E-1 and K-01 is 59 and 76 respectively.

Sometimes, it's hard to imagine the gap between sensor sizes only by looking at technical specs. The image underneath should offer you a better sense of the sensor dimensions in the E-1 and K-01.

As you have seen, the two cameras provide different resolutions and different sensor sizes. The E-1 using its tinier sensor is going to make shooting shallower DOF harder and the Pentax K-01 will give you more detail having an extra 11 Megapixels. Higher resolution can also help you crop shots more aggressively. The more aged E-1 is going to be behind when it comes to sensor tech.