Pentax K-S1 vs Sony RX100 IV

Its time to examine more in depth at the Pentax K-S1 versus Sony RX100 IV, former being a Advanced DSLR while the latter is a Large Sensor Compact by rivals Pentax and Sony. The sensor resolution of the K-S1 (20MP) and the RX100 IV (20MP) is pretty close but the K-S1 (APS-C) and RX100 IV (1") feature different sensor sizing.

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The K-S1 was released 9 months earlier than the RX100 IV and they are both of a similar age. Both of these cameras offer different body type with the Pentax K-S1 being a Mid-size SLR camera and the Sony RX100 IV being a Large Sensor Compact camera.

Before delving through a more detailed comparison, below is a quick view of how the K-S1 grades against the RX100 IV when considering portability, imaging, features and an overall grade.

Below is a preview of the gallery images for Pentax K-S1 & Sony Cyber-shot DSC-RX100 IV. The complete galleries are available at Pentax K-S1 Gallery & Sony RX100 IV Gallery.

For those who are aiming to lug around your camera, you need to take into account its weight and proportions. The Pentax K-S1 has outside measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") having a weight of 558 grams (1.23 lbs) while the Sony RX100 IV has measurements of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") having a weight of 298 grams (0.66 lbs).

Examine the Pentax K-S1 versus Sony RX100 IV in our brand new Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will vary dependant on the lens you are using at the time. Underneath is the front view proportions comparison of the K-S1 and the RX100 IV.

Taking into account size and weight, the portability score of the K-S1 and RX100 IV is 69 and 89 respectively.

Generally, it's difficult to imagine the gap in sensor measurements simply by viewing specs. The visual here will provide you a much better sense of the sensor measurements in the K-S1 and RX100 IV.

As you can plainly see, each of the cameras enjoy the same exact MP albeit different sensor measurements. The K-S1 provides the bigger sensor which will make getting shallower depth of field less difficult. The older K-S1 will be disadvantaged with regard to sensor innovation.