Pentax 645Z vs Sony A100

Here is a complete review of the Pentax 645Z versus Sony A100, one being a Pro DSLR and the other is a Entry-Level DSLR by competitors Pentax and Sony. There exists a big gap among the sensor resolutions of the 645Z (51MP) and A100 (10MP) and the 645Z (Medium format) and A100 (APS-C) enjoy different sensor sizing.

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The 645Z was unveiled 7 years later than the A100 and that is a fairly big gap as far as camera technology is concerned. Both cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Sony A100 being a Compact SLR camera.

Before going in to a in depth comparison, below is a short view of how the 645Z grades against the A100 with regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Pentax 645Z and Sony Alpha DSLR-A100. The full galleries are viewable at Pentax 645Z Gallery and Sony A100 Gallery.

If you are intending to carry your camera regularly, you need to factor its weight and dimensions. The Pentax 645Z offers physical measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") along with a weight of 1550 grams (3.42 lbs) and the Sony A100 has dimensions of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") and a weight of 638 grams (1.41 lbs).

Check out the Pentax 645Z versus Sony A100 in the new Camera with Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change depending on the lens you have chosen during that time. The following is the front view measurement comparison of the 645Z vs the A100.

Factoring in dimensions and weight, the portability score of the 645Z and A100 is 49 and 64 respectively.

Sometimes, its difficult to imagine the difference in sensor sizing merely by seeing specs. The graphic underneath will provide you a greater sense of the sensor sizing in the 645Z and A100.

All in all, both of these cameras enjoy different megapixel count and different sensor sizing. The 645Z using its larger sensor is going to make shooting shallower depth of field easier and the Pentax 645Z will provide extra detail having an extra 41MP. Greater resolution will also enable you to crop images far more aggressively. The newer 645Z should have a benefit when it comes to sensor technology.