Pentax 645Z vs Pentax K-5

Let's look more in depth at the Pentax 645Z versus Pentax K-5, one is a Pro DSLR and the latter is a Advanced DSLR and both are manufactured by Pentax. There is a big difference among the sensor resolutions of the 645Z (51MP) and K-5 (16MP) and the 645Z (Medium format) and K-5 (APS-C) boast different sensor size.

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The 645Z was announced 3 years after the K-5 which is a fairly big gap as far as camera tech is concerned. The two cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Pentax K-5 being a Mid-size SLR camera.

Before we go straight to a step-by-step comparison, here is a concise summary of how the 645Z scores against the K-5 in the way of portability, imaging, features and an overall mark.

This is a preview of the gallery images for Pentax 645Z and Pentax K-5. The whole galleries are available at Pentax 645Z Gallery and Pentax K-5 Gallery.

For those who are planning to travel with your camera frequently, you'll have to factor in its weight and size. The Pentax 645Z provides physical dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs) whilst the Pentax K-5 has specifications of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") with a weight of 740 grams (1.63 lbs).

Check the Pentax 645Z versus Pentax K-5 in the latest Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at the time. The following is a front view size comparison of the 645Z vs the K-5.

Using size and weight, the portability score of the 645Z and K-5 is 49 and 60 respectively.

Often, it is very tough to imagine the difference in sensor dimensions merely by going through specs. The pic here may give you a stronger sense of the sensor dimensions in the 645Z and K-5.

As you can plainly see, the two cameras come with different resolutions and different sensor dimensions. The 645Z using its bigger sensor is going to make achieving shallower DOF less difficult and the Pentax 645Z will show extra detail with its extra 35MP. Higher resolution will also let you crop pictures a good deal more aggressively. The more modern 645Z should have an edge in sensor innovation.