Sony A9 II vs Sony a5100

Let's take a more detailed look at the Sony A9 II versus Sony a5100, former is a Pro Mirrorless while the latter is a Entry-Level Mirrorless and both are created by Sony. The image resolution of the A9 II (24MP) and the a5100 (24MP) is relatively well matched but the A9 II (Full frame) and a5100 (APS-C) provide totally different sensor size.

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The A9 II was released 5 years after the a5100 which is quite a big difference as far as technology is concerned. Both the cameras have different body design with the Sony A9 II being a SLR-style mirrorless camera and the Sony a5100 being a Rangefinder-style mirrorless camera.

Before getting right into a comprehensive comparison, here is a simple synopsis of how the A9 II scores against the a5100 for portability, imaging, features and an overall mark.

Below is a preview of the gallery photos for Sony Alpha A9 Mark II & Sony Alpha a5100. The complete galleries are provided at Sony A9 II Gallery & Sony a5100 Gallery.

For those who are aiming to travel with your camera, you will have to take into account its weight and measurements. The Sony A9 II provides exterior dimensions of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") with a weight of 678 grams (1.49 lbs) while the Sony a5100 has proportions of 110mm x 63mm x 36mm (4.3" x 2.5" x 1.4") accompanied by a weight of 283 grams (0.62 lbs).

See the Sony A9 II versus Sony a5100 in our brand new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will differ dependant on the lens you select at that moment. The following is a front view physical size comparison of the A9 II and the a5100.

Factoring in dimensions and weight, the portability score of the A9 II and a5100 is 62 and 89 respectively.

Typically, its hard to visualise the gap between sensor dimensions simply by reading through technical specs. The image below will give you a more clear sense of the sensor sizes in the A9 II and a5100.

As you can tell, both of the cameras have the same megapixels albeit not the same sensor dimensions. The A9 II contains the bigger sensor which should make getting shallow DOF simpler. The more recent A9 II is going to have a benefit with regard to sensor tech.