Pentax 645D vs Pentax P70

Let's look a little more in depth at the Pentax 645D and Pentax P70, one being a Pro DSLR and the other is a Ultracompact and they are both created by Pentax. There exists a significant gap among the resolutions of the 645D (40MP) and P70 (12MP) and the 645D (Medium format) and P70 (1/2.3") boast totally different sensor sizes.

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The 645D was released 13 months later than the P70 making them a generation apart from one another. Each of these cameras have different body design with the Pentax 645D being a Large SLR camera and the Pentax P70 being a Ultracompact camera.

Before diving into a step-by-step comparison, here is a brief overview of how the 645D grades versus the P70 for portability, imaging, features and an overall grade.

Below is a sample of the gallery pictures for Pentax 645D and Pentax Optio P70. The complete galleries are viewable at Pentax 645D Gallery and Pentax P70 Gallery.

In case you're intending to lug around your camera frequently, you will have to think about its weight and proportions. The Pentax 645D features outside measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) and the Pentax P70 has measurements of 97mm x 54mm x 22mm (3.8" x 2.1" x 0.9") accompanied by a weight of 155 grams (0.34 lbs).

Examine the Pentax 645D and Pentax P70 in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you have chosen at the time. The following is a front view over all size comparison of the 645D and the P70.

Factoring in dimensions and weight, the portability score of the 645D and P70 is 50 and 95 respectively.

Sometimes, it's difficult to see the gap in sensor measurements purely by going through technical specs. The photograph below will help offer you a more clear sense of the sensor sizing in the 645D and P70.

As you have seen, both the cameras provide different megapixels and different sensor measurements. The 645D due to its larger sensor will make shooting shallower DOF simpler and the Pentax 645D will show greater detail as a result of its extra 28MP. Greater resolution can also help you crop images more aggressively. The more modern 645D will have a benefit when it comes to sensor tech.