Pentax 645D vs Pentax H90

Let's take a more detailed look at the Pentax 645D and Pentax H90, former being a Pro DSLR while the latter is a Small Sensor Compact and they are both created by Pentax. There is a large difference between the image resolutions of the 645D (40MP) and H90 (12MP) and the 645D (Medium format) and H90 (1/2.3") enjoy different sensor dimensions.

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The 645D was released 2 months later than the H90 so they are both of a similar age. Both of the cameras come with different body type with the Pentax 645D being a Large SLR camera and the Pentax H90 being a Compact camera.

Before we go in to a step-by-step comparison, below is a brief overview of how the 645D matches up versus the H90 for portability, imaging, features and an overall grade.

The following is a preview of the gallery images for Pentax 645D & Pentax Optio H90. The complete galleries are viewable at Pentax 645D Gallery & Pentax H90 Gallery.

If you're intending to lug around your camera often, you'll have to factor its weight and proportions. The Pentax 645D has got external dimensions 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 H90 has measurements of 101mm x 65mm x 28mm (4.0" x 2.6" x 1.1") having a weight of 153 grams (0.34 lbs).

Analyze the Pentax 645D and Pentax H90 in our brand new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary depending on the lens you are using at the time. Below is the front view size comparison of the 645D compared to the H90.

Looking at size and weight, the portability score of the 645D and H90 is 50 and 93 respectively.

Generally, its difficult to imagine the contrast between sensor measurements purely by reading through a spec sheet. The photograph underneath may offer you a stronger sense of the sensor dimensions in the 645D and H90.

As you can see, both of the cameras have got different megapixel count and different sensor measurements. The 645D due to its bigger sensor is going to make shooting shallow DOF easier and the Pentax 645D will resolve greater detail as a result of its extra 28MP. Higher resolution can also let you crop photographs much more aggressively.