Pentax 645D vs Sony A58

The following is a in depth overview of the Pentax 645D vs Sony A58, one is a Pro DSLR and the latter is a Entry-Level DSLR by rivals Pentax and Sony. There exists a crucial gap among the image resolutions of the 645D (40MP) and A58 (20MP) and the 645D (Medium format) and A58 (APS-C) come with totally different sensor size.

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The 645D was unveiled 4 years earlier than the A58 which is a fairly serious gap as far as camera technology is concerned. Both cameras come with different body type with the Pentax 645D being a Large SLR camera and the Sony A58 being a Compact SLR camera.

Before getting through a complete comparison, below is a simple summary of how the 645D matches up versus the A58 when it comes to portability, imaging, features and an overall mark.

This is a preview of the gallery images for Pentax 645D and Sony SLT-A58. The full galleries are provided at Pentax 645D Gallery and Sony A58 Gallery.

In case you're going to travel with your camera regularly, you're going to have to consider its weight and volume. The Pentax 645D comes with physical 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) and the Sony A58 has sizing of 129mm x 95mm x 78mm (5.1" x 3.7" x 3.1") and a weight of 492 grams (1.08 lbs).

Examine the Pentax 645D vs Sony A58 in the all new Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will change depending on the lens you select at the time. Following is the front view dimension comparison of the 645D compared to the A58.

Factoring in dimensions and weight, the portability rating of the 645D and A58 is 50 and 68 respectively.

Sometimes, it is tough to see the contrast in sensor dimensions just by looking through specifications. The picture below will give you a far better sense of the sensor sizing in the 645D and A58.

Plainly, both cameras have got different megapixels and different sensor dimensions. The 645D using its bigger sensor will make shooting shallow DOF simpler and the Pentax 645D will provide you with extra detail having an extra 20 Megapixels. Higher resolution will also make it easier to crop pictures much more aggressively. The more aged 645D will be disadvantaged in sensor tech.