Pentax 645Z vs Pentax K100D

Here is a complete assessment of the Pentax 645Z vs Pentax K100D, former being a Pro DSLR while the latter is a Entry-Level DSLR and both are manufactured by Pentax. There exists a sizable gap between the sensor resolutions of the 645Z (51MP) and K100D (6MP) and the 645Z (Medium format) and K100D (APS-C) enjoy different sensor measurements.

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The 645Z was launched 7 years later than the K100D and that is quite a significant difference as far as technology is concerned. The two cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Pentax K100D being a Compact SLR camera.

Before getting straight into a complete comparison, below is a short summary of how the 645Z matches up against the K100D with regard to portability, imaging, features and an overall rating.

The following is a preview of the gallery images for Pentax 645Z & Pentax K100D. The complete galleries are viewable at Pentax 645Z Gallery & Pentax K100D Gallery.

For those who are planning to carry your camera often, you are going to need to consider its weight and size. The Pentax 645Z has got physical 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 has specifications of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") and a weight of 660 grams (1.46 lbs).

Check the Pentax 645Z vs Pentax K100D in our newest Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will differ depending on the lens you are working with at that moment. Underneath is the front view proportions comparison of the 645Z vs the K100D.

Using dimensions and weight, the portability rating of the 645Z and K100D is 49 and 64 respectively.

More often than not, it's tough to visualize the contrast between sensor sizing only by reading specifications. The graphic below should provide you a stronger sense of the sensor sizing in the 645Z and K100D.

To sum up, the 2 cameras offer different megapixels and different sensor sizing. The 645Z because of its bigger sensor is going to make shooting shallow depth of field simpler and the Pentax 645Z will offer more detail utilizing its extra 45MP. Higher resolution will also let you crop photographs a little more aggressively. The fresher 645Z should have an edge when it comes to sensor technology.