Pentax 645D vs Pentax K-7

Lets look more closely at the Pentax 645D versus Pentax K-7, one being a Pro DSLR and the latter is a Advanced DSLR and both are manufactured by Pentax. There is a big difference among the resolutions of the 645D (40MP) and K-7 (15MP) and the 645D (Medium format) and K-7 (APS-C) use different sensor size.

Photography Glossary

The 645D was manufactured 6 months later than the K-7 and they are both of a similar generation. Each of the cameras come with different body type with the Pentax 645D being a Large SLR camera and the Pentax K-7 being a Mid-size SLR camera.

Before delving through a in depth comparison, below is a concise summary of how the 645D matches up against the K-7 in terms of portability, imaging, features and an overall grade.

This is a preview of the gallery photos for Pentax 645D and Pentax K-7. The entire galleries are viewable at Pentax 645D Gallery and Pentax K-7 Gallery.

For anyone who is intending to lug around your camera regularly, you're going to have to factor its weight and proportions. The Pentax 645D has got outer dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) whilst the Pentax K-7 has measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") along with a weight of 750 grams (1.65 lbs).

Check the Pentax 645D versus Pentax K-7 in the latest Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you are using during that time. The following is the front view sizing comparison of the 645D vs the K-7.

Considering size and weight, the portability score of the 645D and K-7 is 50 and 60 respectively.

In many cases, it is hard to picture the contrast in sensor measurements just by looking through specs. The graphic underneath might offer you a better sense of the sensor sizes in the 645D and K-7.

As you can plainly see, the 2 cameras posses different megapixels and different sensor measurements. The 645D featuring a bigger sensor is going to make shooting shallow DOF less difficult and the Pentax 645D will provide you with extra detail due to its extra 25 Megapixels. Higher resolution will help you crop shots somewhat more aggressively.