Pentax 645D vs Pentax K100D

Lets look a little more in depth at the Pentax 645D and Pentax K100D, one being a Pro DSLR and the other is a Entry-Level DSLR and they are both designed by Pentax. There is a crucial difference among the resolutions of the 645D (40MP) and K100D (6MP) and the 645D (Medium format) and K100D (APS-C) enjoy totally different sensor size.

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The 645D was launched 3 years later than the K100D and that is a fairly serious gap as far as camera tech is concerned. Each of the cameras come with different body type with the Pentax 645D being a Large SLR camera and the Pentax K100D being a Compact SLR camera.

Before getting in to a step-by-step comparison, below is a concise summary of how the 645D scores against the K100D in terms of portability, imaging, features and an overall grade.

Below is a sample of the gallery pics for Pentax 645D and Pentax K100D. The complete galleries are provided at Pentax 645D Gallery and Pentax K100D Gallery.

For anyone who is going to lug around your camera, you are going to need to think about its weight and measurements. The Pentax 645D offers outer dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) whilst the Pentax K100D has proportions of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") accompanied by a weight of 660 grams (1.46 lbs).

Check the Pentax 645D and Pentax K100D in the latest Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you are employing at that time. Here is the front view overall size comparison of the 645D versus the K100D.

Using size and weight, the portability grade of the 645D and K100D is 50 and 64 respectively.

Often, it is very tough to see the gap in sensor measurements merely by checking out specs. The photograph here will provide you a far better sense of the sensor sizes in the 645D and K100D.

As you can plainly see, each of these cameras posses different megapixel count and different sensor measurements. The 645D featuring a larger sensor will make achieving shallow depth of field simpler and the Pentax 645D will produce greater detail utilizing its extra 34 Megapixels. Greater resolution will make it easier to crop images somewhat more aggressively. The younger 645D is going to have an advantage in sensor technology.