Pentax K100D S vs Sony A390

Following is a extended overview of the Pentax K100D S versus Sony A390, both Entry-Level DSLR digital cameras by rivals Pentax and Sony. There is a substantial difference between the image resolutions of the K100D S (6MP) and A390 (14MP) but both cameras provide the same sensor dimensions (APS-C).

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The K100D S was launched 4 years before the A390 which is quite a big difference as far as tech is concerned. Both the cameras have the same body design (Compact SLR).

Before going right into a full comparison, here is a simple summary of how the K100D S matches up versus the A390 when it comes to portability, imaging, features and an overall score.

This is a sample of the gallery pictures for Pentax K100D Super & Sony Alpha DSLR-A390. The complete galleries are viewable at Pentax K100D S Gallery & Sony A390 Gallery.

For anybody who is aiming to carry around your camera, you are going to need to factor its weight and volume. The Pentax K100D S offers outer measurements of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") along with a weight of 646 grams (1.42 lbs) while the Sony A390 has sizing of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") along with a weight of 549 grams (1.21 lbs).

Look at the Pentax K100D S versus Sony A390 in our completely new Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will differ based on the lens you are working with at the time. The following is a front view dimension comparison of the K100D S against the A390.

Considering size and weight, the portability rating of the K100D S and A390 is 65 and 66 respectively.

Oftentimes, it is very difficult to see the gap between sensor sizes merely by reading through specs. The picture underneath will provide you a stronger sense of the sensor sizing in the K100D S and A390.

As you can plainly see, both of those cameras have the same sensor dimensions but not the same MP. You can anticipate the Sony A390 to resolve greater detail utilizing its extra 8 Megapixels. Greater resolution will allow you to crop photos a bit more aggressively. The more aged K100D S is going to be behind with regard to sensor innovation.