Pentax K100D S vs Pentax E90

Following is a extensive comparison of the Pentax K100D S and Pentax E90, one is a Entry-Level DSLR and the latter is a Small Sensor Compact and both of them are designed by Pentax. There exists a huge gap among the resolutions of the K100D S (6MP) and E90 (10MP) and the K100D S (APS-C) and E90 (1/2.3") use different sensor measurements.

Photography Glossary

The K100D S was introduced 3 years before the E90 which is a fairly significant gap as far as camera technology is concerned. Each of these cameras come with different body type with the Pentax K100D S being a Compact SLR camera and the Pentax E90 being a Compact camera.

Before delving straight into a complete comparison, below is a quick introduction of how the K100D S grades vs the E90 with respect to portability, imaging, features and an overall score.

Below is a preview of the gallery photos for Pentax K100D Super and Pentax Optio E90. The whole galleries are available at Pentax K100D S Gallery and Pentax E90 Gallery.

For those who are intending to carry around your camera frequently, you will have to take into account its weight and volume. The Pentax K100D S has exterior measurements of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") having a weight of 646 grams (1.42 lbs) and the Pentax E90 has sizing of 102mm x 59mm x 25mm (4.0" x 2.3" x 1.0") with a weight of 145 grams (0.32 lbs).

Check out the Pentax K100D S and Pentax E90 in the all new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you are working with during that time. Below is the front view scale comparison of the K100D S against the E90.

Taking into consideration dimensions and weight, the portability rating of the K100D S and E90 is 65 and 94 respectively.

Quite often, it is difficult to picture the gap in sensor sizes purely by looking through technical specs. The picture below will help provide you a much better sense of the sensor sizing in the K100D S and E90.

As you have seen, both of the cameras posses different resolutions and different sensor sizes. The K100D S having a bigger sensor is going to make shooting shallower depth of field less difficult and the Pentax E90 will render greater detail using its extra 4MP. Higher resolution will also enable you to crop photographs somewhat more aggressively. The more aged K100D S will be behind in sensor tech.