Sony A9 II vs Sony A6400

Here is a complete overview of the Sony A9 II versus Sony A6400, one being a Pro Mirrorless and the latter is a Advanced Mirrorless and both of them are created by Sony. The resolution of the A9 II (24MP) and the A6400 (24MP) is pretty close but the A9 II (Full frame) and A6400 (APS-C) feature different sensor size.

Photography Glossary

The A9 II was revealed 9 months later than the A6400 and they are both of a similar generation. Both the cameras come with different body type with the Sony A9 II being a SLR-style mirrorless camera and the Sony A6400 being a Rangefinder-style mirrorless camera.

Before getting straight into a thorough comparison, below is a short highlight of how the A9 II matches up versus the A6400 for portability, imaging, features and an overall rating.

Here is a preview of the gallery images for Sony Alpha A9 Mark II and Sony Alpha a6400. The full galleries are provided at Sony A9 II Gallery and Sony A6400 Gallery.

For those who are going to carry your camera frequently, you will need to think about its weight and measurements. The Sony A9 II features outside measurements of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") along with a weight of 678 grams (1.49 lbs) and the Sony A6400 has proportions of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") with a weight of 403 grams (0.89 lbs).

Compare the Sony A9 II versus Sony A6400 in the new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you have at the time. Here is the front view measurements comparison of the A9 II against the A6400.

Using dimensions and weight, the portability grade of the A9 II and A6400 is 62 and 83 respectively.

Normally, it's tough to imagine the difference in sensor sizing just by looking through technical specs. The visual here will help give you a stronger sense of the sensor sizing in the A9 II and A6400.

As you have seen, the two cameras have got the exact same megapixels albeit different sensor sizing. The A9 II provides the bigger sensor which is going to make obtaining bokeh simpler. The newer A9 II should have an edge when it comes to sensor innovation.