Pentax K-S1 vs Sony RX100 III

Below is a comprehensive analysis of the Pentax K-S1 versus Sony RX100 III, former being a Advanced DSLR while the other is a Large Sensor Compact by brands Pentax and Sony. The image resolution of the K-S1 (20MP) and the RX100 III (20MP) is very similar but the K-S1 (APS-C) and RX100 III (1") come with different sensor size.

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The K-S1 was announced 4 months later than the RX100 III and they are both of a similar age. Both cameras offer different body type with the Pentax K-S1 being a Mid-size SLR camera and the Sony RX100 III being a Large Sensor Compact camera.

Before delving through a more detailed comparison, below is a brief overview of how the K-S1 scores vs the RX100 III with respect to portability, imaging, features and an overall grade.

Below is a sample of the gallery pics for Pentax K-S1 & Sony Cyber-shot DSC-RX100 III. The whole galleries are provided at Pentax K-S1 Gallery & Sony RX100 III Gallery.

For those who are aiming to lug around your camera frequently, you need to factor in its weight and proportions. The Pentax K-S1 has got outside dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs) whilst the Sony RX100 III has measurements of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") accompanied by a weight of 290 grams (0.64 lbs).

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

Take into account, the weight of an ILC will differ dependant on the lens you use during that time. Below is the front view size comparison of the K-S1 and the RX100 III.

Taking into consideration dimensions and weight, the portability grade of the K-S1 and RX100 III is 69 and 89 respectively.

Typically, its difficult to visualize the gap between sensor measurements only by reading technical specs. The visual here may offer you a far better sense of the sensor dimensions in the K-S1 and RX100 III.

As you can tell, the 2 cameras enjoy the same exact megapixel count but different sensor measurements. The K-S1 contains the larger sensor which is going to make achieving shallow depth of field less difficult.