Pentax 645D vs Sony W570

Below is a detailed comparison of the Pentax 645D and Sony W570, former being a Pro DSLR while the other is a Ultracompact by companies Pentax and Sony. There is a considerable difference between the image resolutions of the 645D (40MP) and W570 (16MP) and the 645D (Medium format) and W570 (1/2.3") use different sensor sizing.

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The 645D was unveiled 10 months earlier than the W570 which means that they are both of a similar age. Each of these cameras come with different body type with the Pentax 645D being a Large SLR camera and the Sony W570 being a Ultracompact camera.

Before diving in to a more detailed comparison, below is a simple summary of how the 645D matches up against the W570 with regard to portability, imaging, features and an overall grade.

Here is a sample of the gallery pictures for Pentax 645D & Sony Cyber-shot DSC-W570. The full galleries are available at Pentax 645D Gallery & Sony W570 Gallery.

For those who are going to lug around your camera often, you'll need to factor in its weight and proportions. The Pentax 645D has physical dimensions 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 W570 has measurements of 91mm x 52mm x 19mm (3.6" x 2.0" x 0.7") and a weight of 116 grams (0.26 lbs).

Analyze the Pentax 645D and Sony W570 in our completely new Camera plus Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will vary based on the lens you are working with at that moment. Following is the front view dimension comparison of the 645D vs the W570.

Looking at size and weight, the portability grade of the 645D and W570 is 50 and 96 respectively.

Usually, it's hard to visualize the difference between sensor measurements simply by checking technical specs. The visual below will help provide you a clearer sense of the sensor sizes in the 645D and W570.

As you have seen, the two cameras have got different megapixel count and different sensor measurements. The 645D with its larger sensor is going to make getting shallow DOF easier and the Pentax 645D will give you extra detail having an extra 24 Megapixels. Greater resolution can also help you crop photos much more aggressively. The older 645D is going to be behind with regard to sensor tech.