Sony A9 vs Sony A6400

Lets take a closer look at the Sony A9 versus Sony A6400, former being a Pro Mirrorless while the latter is a Advanced Mirrorless and both are sold by Sony. The sensor resolution of the A9 (24MP) and the A6400 (24MP) is pretty close but the A9 (Full frame) and A6400 (APS-C) use totally different sensor sizes.

Photography Glossary

The A9 was manufactured 21 months earlier than the A6400 which makes the cameras a generation apart from each other. Both cameras offer different body type with the Sony A9 being a SLR-style mirrorless camera and the Sony A6400 being a Rangefinder-style mirrorless camera.

Before going through a in depth comparison, below is a quick highlight of how the A9 grades versus the A6400 in terms of portability, imaging, features and an overall grade.

Below is a preview of the gallery images for Sony Alpha A9 & Sony Alpha a6400. The entire galleries are available at Sony A9 Gallery & Sony A6400 Gallery.

For anyone who is intending to lug around your camera frequently, you will want to take into account its weight and volume. The Sony A9 provides outside dimensions of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") with a weight of 673 grams (1.48 lbs) whilst the Sony A6400 has sizing of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") with a weight of 403 grams (0.89 lbs).

Take a look at the Sony A9 versus Sony A6400 in our completely new Camera plus Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ depending on the lens you select at that time. Below is the front view scale comparison of the A9 vs the A6400.

Using size and weight, the portability grade of the A9 and A6400 is 65 and 83 respectively.

In many cases, it is tough to see the gap in sensor measurements purely by researching specifications. The graphic below might offer you a greater sense of the sensor dimensions in the A9 and A6400.

To sum up, both the cameras offer the same exact MP albeit not the same sensor measurements. The A9 includes the bigger sensor which is going to make obtaining shallow depth of field simpler. The older A9 will be behind when it comes to sensor technology.