Pentax 645Z vs Sony A37

The following is a in depth overview of the Pentax 645Z and Sony A37, one is a Pro DSLR and the latter is a Entry-Level DSLR by manufacturers Pentax and Sony. There is a sizeable difference among the image resolutions of the 645Z (51MP) and A37 (16MP) and the 645Z (Medium format) and A37 (APS-C) feature totally different sensor sizing.

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The 645Z was unveiled 24 months after the A37 which makes the cameras a generation away from each other. Both the cameras come with different body type with the Pentax 645Z being a Large SLR camera and the Sony A37 being a Compact SLR camera.

Before delving in to a comprehensive comparison, below is a short introduction of how the 645Z matches up vs the A37 with respect to portability, imaging, features and an overall mark.

This is a preview of the gallery images for Pentax 645Z and Sony SLT-A37. The full galleries are provided at Pentax 645Z Gallery and Sony A37 Gallery.

If you are intending to travel with your camera frequently, you are going to need to factor in its weight and size. The Pentax 645Z features outside dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs) and the Sony A37 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") and a weight of 506 grams (1.12 lbs).

Compare the Pentax 645Z and Sony A37 in the new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary based on the lens you are employing during that time. Here is the front view overall size comparison of the 645Z versus the A37.

Looking at size and weight, the portability score of the 645Z and A37 is 49 and 67 respectively.

In many cases, its difficult to visualise the contrast in sensor dimensions only by seeing technical specs. The picture underneath will give you a better sense of the sensor dimensions in the 645Z and A37.

As you can tell, both the cameras posses different resolutions and different sensor dimensions. The 645Z with its bigger sensor will make getting shallower depth of field less difficult and the Pentax 645Z will show extra detail having an extra 35MP. Higher resolution will also let you crop shots somewhat more aggressively. The newer 645Z will have a benefit when it comes to sensor tech.