Pentax K100D vs Sony A580

Here, we will be comparing the Pentax K100D and Sony A580, both Entry-Level DSLR digital cameras by brands Pentax and Sony. There is a noticeable difference between the resolutions of the K100D (6MP) and A580 (16MP) but both cameras boast the identical sensor measurements (APS-C).

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The K100D was unveiled 5 years earlier than the A580 and that is quite a sizable difference as far as tech is concerned. Each of these cameras feature the same body design (Compact SLR).

Before diving right into a comprehensive comparison, here is a brief synopsis of how the K100D scores versus the A580 with regards to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Pentax K100D & Sony Alpha DSLR-A580. The full galleries are available at Pentax K100D Gallery & Sony A580 Gallery.

For anybody who is looking to lug around your camera, you will have to consider its weight and measurements. The Pentax K100D has physical measurements of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") along with a weight of 660 grams (1.46 lbs) and the Sony A580 has proportions of 137mm x 104mm x 84mm (5.4" x 4.1" x 3.3") having a weight of 599 grams (1.32 lbs).

Analyze the Pentax K100D and Sony A580 in our completely new Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will change based on the lens you have during that time. Underneath is a front view dimension comparison of the K100D against the A580.

Taking into consideration size and weight, the portability grade of the K100D and A580 is 64 and 64 respectively.

Generally, it is difficult to see the contrast between sensor measurements merely by reading specs. The photograph below might provide you a much better sense of the sensor measurements in the K100D and A580.

All in all, both of these cameras come with the identical sensor size albeit not the same resolution. You can expect the Sony A580 to deliver more detail having an extra 10MP. Higher resolution can also make it easier to crop photographs a good deal more aggressively. The older K100D is going to be behind with regard to sensor tech.