Panasonic G9 vs Pentax K20D

Here, we will be matching up the Panasonic G9 and Pentax K20D, one being a Pro Mirrorless and the latter is a Advanced DSLR by competitors Panasonic and Pentax. There is a sizeable difference between the resolutions of the G9 (20MP) and K20D (15MP) and the G9 (Four Thirds) and K20D (APS-C) posses totally different sensor sizes.

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The G9 was brought out 9 years later than the K20D and that is quite a large gap as far as tech is concerned. Each of the cameras feature different body design with the Panasonic G9 being a SLR-style mirrorless camera and the Pentax K20D being a Mid-size SLR camera.

Before we go straight to a comprehensive comparison, here is a simple highlight of how the G9 grades against the K20D in regards to portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Panasonic Lumix DC-G9 and Pentax K20D. The entire galleries are provided at Panasonic G9 Gallery and Pentax K20D Gallery.

If you are intending to carry your camera, you are going to need to factor its weight and dimensions. The Panasonic G9 enjoys outer dimensions of 137mm x 97mm x 92mm (5.4" x 3.8" x 3.6") and a weight of 658 grams (1.45 lbs) whilst the Pentax K20D has dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") and a weight of 800 grams (1.76 lbs).

Contrast the Panasonic G9 and Pentax K20D in the new Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you are utilising during that time. Underneath is a front view size comparison of the G9 vs the K20D.

Taking into account size and weight, the portability score of the G9 and K20D is 62 and 59 respectively.

In many cases, it can be tough to see the difference between sensor sizing simply by reviewing technical specs. The photograph below will provide you a much better sense of the sensor sizes in the G9 and K20D.

As you can tell, the 2 cameras feature different megapixels and different sensor sizing. The G9 due to its tinier sensor will make shooting shallow depth of field trickier and the Panasonic G9 will deliver greater detail having its extra 5MP. Higher resolution will also make it easier to crop pictures way more aggressively. The newer G9 is going to have a benefit in sensor innovation.