Pentax 645D vs Sony A580

Below is a detailed review of the Pentax 645D vs Sony A580, former being a Pro DSLR while the other is a Entry-Level DSLR by rivals Pentax and Sony. There exists a large gap among the resolutions of the 645D (40MP) and A580 (16MP) and the 645D (Medium format) and A580 (APS-C) come with different sensor dimensions.

Photography Glossary

The 645D was announced 14 months before the A580 making the cameras a generation apart from one another. Each of these cameras come with different body type with the Pentax 645D being a Large SLR camera and the Sony A580 being a Compact SLR camera.

Before getting in to a comprehensive comparison, below is a short overview of how the 645D scores vs the A580 in terms of portability, imaging, features and an overall grade.

Below is a sample of the gallery pics for Pentax 645D & Sony Alpha DSLR-A580. The whole galleries are provided at Pentax 645D Gallery & Sony A580 Gallery.

For anybody who is going to lug around your camera often, you will need to factor its weight and size. The Pentax 645D enjoys physical dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs) and the Sony A580 has specifications of 137mm x 104mm x 84mm (5.4" x 4.1" x 3.3") accompanied by a weight of 599 grams (1.32 lbs).

Look at the Pentax 645D vs Sony A580 in our newest Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change dependant on the lens you have during that time. Following is the front view size comparison of the 645D vs the A580.

Considering dimensions and weight, the portability rating of the 645D and A580 is 50 and 64 respectively.

More often than not, it's difficult to visualize the contrast in sensor measurements purely by researching a spec sheet. The photograph below will provide you a greater sense of the sensor dimensions in the 645D and A580.

As you can see, each of the cameras have got different megapixel count and different sensor measurements. The 645D with its larger sensor is going to make getting shallower depth of field easier and the Pentax 645D will result in more detail with its extra 24MP. Greater resolution will also let you crop pics much more aggressively. The older 645D will be behind with regard to sensor technology.