Pentax K100D vs Pentax E90

Lets look more closely at the Pentax K100D vs Pentax E90, former is a Entry-Level DSLR while the other is a Small Sensor Compact and both of them are produced by Pentax. There is a considerable difference between the resolutions of the K100D (6MP) and E90 (10MP) and the K100D (APS-C) and E90 (1/2.3") posses totally different sensor dimensions.

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The K100D was unveiled 4 years earlier than the E90 which is quite a large difference as far as tech is concerned. Both of these cameras have different body design with the Pentax K100D being a Compact SLR camera and the Pentax E90 being a Compact camera.

Before delving straight to a in depth comparison, here is a simple view of how the K100D grades versus the E90 in regards to portability, imaging, features and an overall mark.

Below is a sample of the gallery pics for Pentax K100D & Pentax Optio E90. The full galleries are available at Pentax K100D Gallery & Pentax E90 Gallery.

For anyone who is intending to travel with your camera often, you'll have to factor its weight and volume. The Pentax K100D has physical dimensions of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") having a weight of 660 grams (1.46 lbs) whilst 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).

Look at the Pentax K100D vs Pentax E90 in our brand new Camera & Lens Size Comparison Tool.

Take into account, the weight of an ILC will change depending on the lens you are employing during that time. Below is a front view measurement comparison of the K100D versus the E90.

Using size and weight, the portability score of the K100D and E90 is 64 and 94 respectively.

Usually, it is very hard to visualise the difference between sensor dimensions purely by checking a spec sheet. The image below will provide you a much better sense of the sensor dimensions in the K100D and E90.

Clearly, both the cameras provide different megapixels and different sensor dimensions. The K100D with its larger sensor will make shooting shallower depth of field less difficult and the Pentax E90 will resolve extra detail having an extra 4MP. Greater resolution will enable you to crop images more aggressively. The more aged K100D is going to be disadvantaged when it comes to sensor tech.