Pentax 645Z vs Sony A9

Here, we will be contrasting the Pentax 645Z vs Sony A9, one is a Pro DSLR and the latter is a Pro Mirrorless by competitors Pentax and Sony. There is a huge difference between the resolutions of the 645Z (51MP) and A9 (24MP) and the 645Z (Medium format) and A9 (Full frame) have different sensor sizes.

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The 645Z was unveiled 4 years prior to the A9 which is quite a significant gap as far as tech is concerned. Both of these cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Sony A9 being a SLR-style mirrorless camera.

Before delving straight to a in depth comparison, here is a quick overview of how the 645Z scores vs the A9 for portability, imaging, features and an overall mark.

This is a preview of the gallery photos for Pentax 645Z and Sony Alpha A9. The full galleries are provided at Pentax 645Z Gallery and Sony A9 Gallery.

In case you're planning to travel with your camera often, you are going to need to factor its weight and size. The Pentax 645Z comes with outside dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") and a weight of 1550 grams (3.42 lbs) while the Sony A9 has specifications of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") having a weight of 673 grams (1.48 lbs).

Look at the Pentax 645Z vs Sony A9 in the all new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will change based on the lens you are using at that moment. Underneath is a front view scale comparison of the 645Z vs the A9.

Factoring in size and weight, the portability rating of the 645Z and A9 is 49 and 65 respectively.

Generally, its hard to imagine the gap between sensor dimensions simply by reading through specifications. The picture here might provide you a clearer sense of the sensor sizes in the 645Z and A9.

Plainly, the two cameras feature different resolutions and different sensor dimensions. The 645Z with its bigger sensor is going to make shooting shallow depth of field simpler and the Pentax 645Z will resolve greater detail having an extra 27 Megapixels. Higher resolution can also help you crop photographs way more aggressively. The more aged 645Z is going to be disadvantaged with regard to sensor tech.