Sony A9 vs Sony RX100 III

Lets take a closer look at the Sony A9 versus Sony RX100 III, former being a Pro Mirrorless while the other is a Large Sensor Compact and both of them are built by Sony. The resolution of the A9 (24MP) and the RX100 III (20MP) is very comparable but the A9 (Full frame) and RX100 III (1") offer totally different sensor dimensions.

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The A9 was announced 2 years later than the RX100 III and that is a fairly big difference as far as camera technology is concerned. Each of these cameras feature different body design with the Sony A9 being a SLR-style mirrorless camera and the Sony RX100 III being a Large Sensor Compact camera.

Before delving straight to a complete comparison, here is a concise overview of how the A9 grades against the RX100 III in regards to portability, imaging, features and an overall grade.

The following is a sample of the gallery pics for Sony Alpha A9 & Sony Cyber-shot DSC-RX100 III. The whole galleries are provided at Sony A9 Gallery & Sony RX100 III Gallery.

For anybody who is going to lug around your camera regularly, you are going to need to factor its weight and volume. The Sony A9 features outer dimensions of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") along with a weight of 673 grams (1.48 lbs) while the Sony RX100 III has sizing of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") having a weight of 290 grams (0.64 lbs).

Check the Sony A9 versus Sony RX100 III in our completely new Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will change depending on the lens you are utilising at that time. Below is a front view dimensions comparison of the A9 and the RX100 III.

Looking at dimensions and weight, the portability grade of the A9 and RX100 III is 65 and 89 respectively.

Quite often, it is difficult to envision the difference in sensor measurements purely by going through a spec sheet. The photograph underneath may give you a greater sense of the sensor dimensions in the A9 and RX100 III.

As you can see, both of those cameras come with different megapixel count and different sensor measurements. The A9 with its larger sensor will make achieving shallow DOF less difficult and the Sony A9 will show more detail with its extra 4 Megapixels. Greater resolution can also help you crop images a good deal more aggressively. The younger A9 will have an advantage in sensor tech.