Pentax 645D vs Sony A37

In this write-up, we are reviewing the Pentax 645D and Sony A37, former is a Pro DSLR while the other is a Entry-Level DSLR by manufacturers Pentax and Sony. There exists a substantial gap between the sensor resolutions of the 645D (40MP) and A37 (16MP) and the 645D (Medium format) and A37 (APS-C) possess different sensor size.

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The 645D was unveiled 3 years before the A37 which is quite a big difference as far as technology is concerned. Each of these cameras offer different body type with the Pentax 645D being a Large SLR camera and the Sony A37 being a Compact SLR camera.

Before going in to a in-depth comparison, below is a short introduction of how the 645D matches up versus the A37 when it comes to portability, imaging, features and an overall score.

Here is a sample of the gallery pics for Pentax 645D & Sony SLT-A37. The full galleries are viewable at Pentax 645D Gallery & Sony A37 Gallery.

If you're intending to carry around your camera regularly, you should factor in its weight and proportions. The Pentax 645D has got outside measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) while the Sony A37 has measurements of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") accompanied by a weight of 506 grams (1.12 lbs).

Look at the Pentax 645D and Sony A37 in our brand new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ dependant on the lens you are utilising at the time. Here is the front view measurements comparison of the 645D against the A37.

Factoring in dimensions and weight, the portability score of the 645D and A37 is 50 and 67 respectively.

Sometimes, it's difficult to visualize the gap between sensor sizes just by reading a spec sheet. The picture here will help offer you a stronger sense of the sensor measurements in the 645D and A37.

As you can see, both of those cameras offer different megapixels and different sensor sizes. The 645D with its larger sensor is going to make shooting shallow DOF less difficult and the Pentax 645D will offer extra detail having an extra 24 Megapixels. Greater resolution can also enable you to crop images a little more aggressively. The more aged 645D is going to be behind in sensor tech.