Pentax 645Z vs Sony A300

Here is a extensive review of the Pentax 645Z versus Sony A300, one being a Pro DSLR and the other is a Entry-Level DSLR by manufacturers Pentax and Sony. There is a sizeable difference between the sensor resolutions of the 645Z (51MP) and A300 (10MP) and the 645Z (Medium format) and A300 (APS-C) use different sensor measurements.

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The 645Z was introduced 6 years later than the A300 and that is quite a large gap as far as tech is concerned. Each of the cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Sony A300 being a Compact SLR camera.

Before diving straight into a in-depth comparison, below is a short highlight of how the 645Z grades versus the A300 when it comes to portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Pentax 645Z and Sony Alpha DSLR-A300. The whole galleries are provided at Pentax 645Z Gallery and Sony A300 Gallery.

For anyone who is going to carry your camera often, you are going to need to factor in its weight and dimensions. The Pentax 645Z offers 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) while the Sony A300 has dimensions of 131mm x 99mm x 75mm (5.2" x 3.9" x 3.0") and a weight of 632 grams (1.39 lbs).

See the Pentax 645Z versus Sony A300 in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have chosen at the time. Following is the front view proportions comparison of the 645Z and the A300.

Taking into consideration size and weight, the portability rating of the 645Z and A300 is 49 and 64 respectively.

Generally, it's difficult to imagine the gap between sensor sizing simply by going over a spec sheet. The visual underneath might provide you a far better sense of the sensor sizes in the 645Z and A300.

Clearly, the 2 cameras enjoy different megapixels and different sensor sizing. The 645Z having a larger sensor is going to make achieving shallower DOF easier and the Pentax 645Z will offer more detail using its extra 41MP. Greater resolution will let you crop images far more aggressively. The younger 645Z should have an advantage when it comes to sensor tech.