Pentax K100D S vs Sony A58

The following is a thorough assessment of the Pentax K100D S and Sony A58, both Entry-Level DSLR cameras by manufacturers Pentax and Sony. There is a significant difference among the image resolutions of the K100D S (6MP) and A58 (20MP) but both cameras offer the same sensor size (APS-C).

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The K100D S was manufactured 7 years earlier than the A58 which is a fairly sizable gap as far as camera tech is concerned. Both of the cameras have the same body design (Compact SLR).

Before getting right into a comprehensive comparison, here is a simple summation of how the K100D S matches up versus the A58 in relation to portability, imaging, features and an overall mark.

This is a preview of the gallery images for Pentax K100D Super and Sony SLT-A58. The entire galleries are provided at Pentax K100D S Gallery and Sony A58 Gallery.

For anyone who is intending to travel with your camera, you have to take into account its weight and size. The Pentax K100D S has got outer dimensions of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") accompanied by a weight of 646 grams (1.42 lbs) while the Sony A58 has specifications of 129mm x 95mm x 78mm (5.1" x 3.7" x 3.1") with a weight of 492 grams (1.08 lbs).

Look at the Pentax K100D S and Sony A58 in the latest Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at that time. Following is a front view dimension comparison of the K100D S versus the A58.

Using size and weight, the portability score of the K100D S and A58 is 65 and 68 respectively.

Generally, it is hard to see the difference in sensor dimensions purely by viewing specifications. The pic below might give you a better sense of the sensor dimensions in the K100D S and A58.

Plainly, the two cameras provide the same sensor dimensions albeit not the same MP. You should expect the Sony A58 to render extra detail due to its extra 14 Megapixels. Higher resolution will make it easier to crop shots more aggressively. The more aged K100D S will be behind with regard to sensor technology.