Pentax 645D weighs 1480 g (3.26 lb / 52.21 oz) and has external dimensions of 156 x 117 x 119 mm (6.14 x 4.61 x 4.69″). Considering that the average weight of DSLR type cameras is 774g, Pentax 645D is a significantly heavy camera for its class. With a thickness of 119mm, it is not small either, 42mm thicker than the average of its class.
Here is the front and top view image of Pentax 645D with the dimensions:
In order to give you a better idea about the real life size of Pentax 645D, we have added an image of how it looks next to a credit card and an AA type battery.
Now lets compare the weight and thickness of Pentax 645D with its main competitors:
Pentax 645D has environmental sealings on its body which makes it a weather resistant camera, providing resistance against the water and dust getting in to the camera. If you like outdoors photography and want to be able to use your camera in extreme conditions, Pentax 645D will serve you well. If you attach one of these Pentax 645D weather Sealed lenses to your camera, you will have a great all weather kit.