Pentax K-5 vs Sony RX100 III

Let's look a bit more in depth at the Pentax K-5 and Sony RX100 III, one being a Advanced DSLR and the latter is a Large Sensor Compact by companies Pentax and Sony. The image resolution of the K-5 (16MP) and the RX100 III (20MP) is relatively close but the K-5 (APS-C) and RX100 III (1") come with different sensor sizing.

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The K-5 was revealed 4 years earlier than the RX100 III and that is a fairly significant gap as far as camera tech is concerned. Both the cameras come with different body type with the Pentax K-5 being a Mid-size SLR camera and the Sony RX100 III being a Large Sensor Compact camera.

Before going in to a step-by-step comparison, below is a brief view of how the K-5 scores vs the RX100 III with regard to portability, imaging, features and an overall grade.

The following is a preview of the gallery photos for Pentax K-5 and Sony Cyber-shot DSC-RX100 III. The full galleries are viewable at Pentax K-5 Gallery and Sony RX100 III Gallery.

If you are planning to lug around your camera, you're going to have to factor in its weight and dimensions. The Pentax K-5 has got outer measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") with a weight of 740 grams (1.63 lbs) whilst the Sony RX100 III has dimensions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") with a weight of 290 grams (0.64 lbs).

Check out the Pentax K-5 and Sony RX100 III in the all new Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will change depending on the lens you choose at that moment. Here is the front view dimension comparison of the K-5 versus the RX100 III.

Taking into consideration size and weight, the portability score of the K-5 and RX100 III is 60 and 89 respectively.

Often, it is hard to visualize the gap in sensor measurements only by researching specifications. The photograph below will help give you a far better sense of the sensor sizing in the K-5 and RX100 III.

To sum up, the two cameras posses different megapixel count and different sensor measurements. The K-5 using its bigger sensor is going to make achieving shallower depth of field easier and the Sony RX100 III will result in extra detail because of its extra 4 Megapixels. Higher resolution will help you crop photographs somewhat more aggressively. The older K-5 will be behind in sensor technology.