Pentax 645Z vs Pentax K100D S

Below, we are analyzing the Pentax 645Z vs Pentax K100D S, one being a Pro DSLR and the other is a Entry-Level DSLR and both of them are sold by Pentax. There exists a crucial gap among the resolutions of the 645Z (51MP) and K100D S (6MP) and the 645Z (Medium format) and K100D S (APS-C) possess totally different sensor sizing.

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The 645Z was released 6 years later than the K100D S and that is a fairly serious gap as far as camera technology is concerned. The two cameras come with different body type with the Pentax 645Z being a Large SLR camera and the Pentax K100D S being a Compact SLR camera.

Before diving straight into a comprehensive comparison, below is a simple overview of how the 645Z grades vs the K100D S in relation to portability, imaging, features and an overall grade.

Below is a sample of the gallery pictures for Pentax 645Z and Pentax K100D Super. The complete galleries are available at Pentax 645Z Gallery and Pentax K100D S Gallery.

When you are looking to lug around your camera regularly, you will want to consider its weight and volume. The Pentax 645Z offers outside measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") along with a weight of 1550 grams (3.42 lbs) while the Pentax K100D S has sizing of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") with a weight of 646 grams (1.42 lbs).

Examine the Pentax 645Z vs Pentax K100D S in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you are employing at that time. Here is the front view scale comparison of the 645Z against the K100D S.

Taking into consideration dimensions and weight, the portability rating of the 645Z and K100D S is 49 and 65 respectively.

More often than not, it can be tough to see the contrast in sensor measurements purely by viewing specs. The visual here will provide you a better sense of the sensor sizing in the 645Z and K100D S.

As you can plainly see, both the cameras have got different resolutions and different sensor measurements. The 645Z featuring a larger sensor will make getting shallow DOF less difficult and the Pentax 645Z will result in extra detail as a result of its extra 45MP. Greater resolution will help you crop photos much more aggressively. The fresher 645Z is going to have an edge in sensor innovation.