Pentax K20D vs Sony RX1R

Let's take a closer look at the Pentax K20D vs Sony RX1R, former being a Advanced DSLR while the other is a Large Sensor Compact by rivals Pentax and Sony. There is a sizable difference among the image resolutions of the K20D (15MP) and RX1R (24MP) and the K20D (APS-C) and RX1R (Full frame) offer totally different sensor size.

Meta to Introduce 'AI-Generated' Labels for Media starting next month

The K20D was unveiled 6 years earlier than the RX1R and that is a fairly significant difference as far as camera tech is concerned. Both the cameras have different body design with the Pentax K20D being a Mid-size SLR camera and the Sony RX1R being a Large Sensor Compact camera.

Before diving right into a step-by-step comparison, here is a short highlight of how the K20D matches up versus the RX1R when considering portability, imaging, features and an overall grade.

Following is a sample of the gallery pics for Pentax K20D & Sony Cyber-shot DSC-RX1R. The full galleries are viewable at Pentax K20D Gallery & Sony RX1R Gallery.

For anybody who is intending to lug around your camera, you'll have to think about its weight and dimensions. The Pentax K20D has exterior dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 800 grams (1.76 lbs) while the Sony RX1R has dimensions of 113mm x 65mm x 70mm (4.4" x 2.6" x 2.8") and a weight of 482 grams (1.06 lbs).

Take a look at the Pentax K20D vs Sony RX1R in our newest Camera & Lens Size Comparison Tool.

Always remember, the weight of an ILC will differ dependant on the lens you are employing at the time. The following is a front view size comparison of the K20D and the RX1R.

Taking into account size and weight, the portability rating of the K20D and RX1R is 59 and 79 respectively.

Often, it is very difficult to visualise the difference in sensor measurements merely by researching technical specs. The graphic below will help provide you a clearer sense of the sensor sizes in the K20D and RX1R.

As you can tell, both the cameras have different megapixels and different sensor measurements. The K20D using its smaller sensor will make achieving shallow depth of field trickier and the Sony RX1R will provide you with more detail having an extra 9MP. Greater resolution can also enable you to crop images a bit more aggressively. The older K20D will be disadvantaged with regard to sensor innovation.