Pentax K-x vs Sony RX1

On this page, we are evaluating the Pentax K-x and Sony RX1, former is a Entry-Level DSLR while the other is a Large Sensor Compact by companies Pentax and Sony. There is a considerable difference among the resolutions of the K-x (12MP) and RX1 (24MP) and the K-x (APS-C) and RX1 (Full frame) offer totally different sensor sizing.

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The K-x was unveiled 4 years earlier than the RX1 which is a fairly large difference as far as camera tech is concerned. Both cameras have different body design with the Pentax K-x being a Compact SLR camera and the Sony RX1 being a Large Sensor Compact camera.

Before getting into a more detailed comparison, here is a quick summation of how the K-x scores against the RX1 for portability, imaging, features and an overall score.

Following is a sample of the gallery pictures for Pentax K-x & Sony Cyber-shot DSC-RX1. The full galleries are viewable at Pentax K-x Gallery & Sony RX1 Gallery.

If you're planning to carry around your camera regularly, you will want to factor its weight and dimensions. The Pentax K-x offers outside measurements of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) while the Sony RX1 has dimensions of 113mm x 65mm x 70mm (4.4" x 2.6" x 2.8") along with a weight of 482 grams (1.06 lbs).

Contrast the Pentax K-x and Sony RX1 in our brand new Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will differ dependant on the lens you are utilising at that moment. The following is a front view size comparison of the K-x and the RX1.

Taking into consideration size and weight, the portability rating of the K-x and RX1 is 69 and 79 respectively.

Often, it is very tough to visualise the difference in sensor sizes merely by seeing specs. The image underneath may offer you a better sense of the sensor measurements in the K-x and RX1.

As you can plainly see, the 2 cameras provide different resolutions and different sensor sizes. The K-x using its smaller sensor will make shooting shallow DOF more difficult and the Sony RX1 will produce greater detail having an extra 12 Megapixels. Greater resolution can also let you crop photos more aggressively. The more aged K-x will be disadvantaged with regard to sensor technology.