Pentax 645D vs Sony H55

Below, we will be contrasting the Pentax 645D and Sony H55, former is a Pro DSLR while the latter is a Small Sensor Compact by companies Pentax and Sony. There is a large difference among the image resolutions of the 645D (40MP) and H55 (14MP) and the 645D (Medium format) and H55 (1/2.3") feature totally different sensor dimensions.

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The 645D was announced 3 months earlier than the H55 so they are of a similar age. Both the cameras come with different body type with the Pentax 645D being a Large SLR camera and the Sony H55 being a Compact camera.

Before getting through a complete comparison, below is a simple introduction of how the 645D scores versus the H55 in relation to portability, imaging, features and an overall mark.

Below is a preview of the gallery images for Pentax 645D & Sony Cyber-shot DSC-H55. The whole galleries are viewable at Pentax 645D Gallery & Sony H55 Gallery.

In case you're planning to travel with your camera often, you'll have to consider its weight and size. The Pentax 645D offers outside dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs) while the Sony H55 has specifications of 103mm x 58mm x 29mm (4.1" x 2.3" x 1.1") and a weight of 200 grams (0.44 lbs).

Check out the Pentax 645D and Sony H55 in our newest Camera plus Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary dependant on the lens you are utilising during that time. Following is the front view dimensions comparison of the 645D against the H55.

Factoring in size and weight, the portability score of the 645D and H55 is 50 and 92 respectively.

In many cases, it's hard to visualise the gap in sensor dimensions simply by checking out a spec sheet. The image underneath should give you a stronger sense of the sensor dimensions in the 645D and H55.

As you can see, the 2 cameras have got different megapixel count and different sensor dimensions. The 645D using its bigger sensor will make achieving bokeh less difficult and the Pentax 645D will show extra detail with its extra 26 Megapixels. Higher resolution can also help you crop shots much more aggressively.