Pentax 645Z vs Pentax K-x

Let's look a bit more in depth at the Pentax 645Z vs Pentax K-x, one being a Pro DSLR and the latter is a Entry-Level DSLR and both are built by Pentax. There is a crucial difference among the image resolutions of the 645Z (51MP) and K-x (12MP) and the 645Z (Medium format) and K-x (APS-C) enjoy different sensor size.

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The 645Z was launched 4 years later than the K-x and that is a fairly serious gap as far as camera tech is concerned. Both the cameras come with different body type with the Pentax 645Z being a Large SLR camera and the Pentax K-x being a Compact SLR camera.

Before diving in to a complete comparison, below is a concise view of how the 645Z grades versus the K-x in relation to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Pentax 645Z and Pentax K-x. The complete galleries are viewable at Pentax 645Z Gallery and Pentax K-x Gallery.

If you're looking to lug around your camera, you will have to factor in its weight and volume. The Pentax 645Z offers outer 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 Pentax K-x has sizing of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs).

Contrast the Pentax 645Z vs Pentax K-x in the new Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change dependant on the lens you are utilizing during that time. The following is the front view sizing comparison of the 645Z vs the K-x.

Taking into account size and weight, the portability rating of the 645Z and K-x is 49 and 69 respectively.

Oftentimes, it is tough to picture the gap in sensor measurements only by going through technical specs. The photograph below will offer you a far better sense of the sensor sizes in the 645Z and K-x.

As you can tell, both cameras posses different resolutions and different sensor measurements. The 645Z because of its bigger sensor is going to make getting shallow depth of field simpler and the Pentax 645Z will provide greater detail utilizing its extra 39 Megapixels. Higher resolution will allow you to crop photographs somewhat more aggressively. The fresher 645Z should have a benefit in sensor tech.