Pentax K100D vs Pentax S1

Lets look a bit more closely at the Pentax K100D and Pentax S1, one is a Entry-Level DSLR and the latter is a Small Sensor Compact and both of them are manufactured by Pentax. There is a significant difference between the image resolutions of the K100D (6MP) and S1 (14MP) and the K100D (APS-C) and S1 (1/2.3") feature different sensor measurements.

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The K100D was revealed 5 years prior to the S1 which is quite a sizable gap as far as tech is concerned. Both the cameras offer different body type with the Pentax K100D being a Compact SLR camera and the Pentax S1 being a Compact camera.

Before diving straight into a comprehensive comparison, below is a concise synopsis of how the K100D scores versus the S1 with respect to portability, imaging, features and an overall mark.

Below is a preview of the gallery photos for Pentax K100D and Pentax Optio S1. The full galleries are provided at Pentax K100D Gallery and Pentax S1 Gallery.

For those who are planning to travel with your camera frequently, you will want to take into account its weight and proportions. The Pentax K100D comes with physical measurements of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") with a weight of 660 grams (1.46 lbs) and the Pentax S1 has measurements of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") with a weight of 157 grams (0.35 lbs).

See the Pentax K100D and Pentax S1 in the all new Camera and Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you have attached during that time. The following is the front view over all size comparison of the K100D compared to the S1.

Taking into consideration size and weight, the portability score of the K100D and S1 is 64 and 93 respectively.

Usually, it is very difficult to picture the difference between sensor dimensions simply by reviewing a spec sheet. The pic underneath should provide you a clearer sense of the sensor sizing in the K100D and S1.

As you can see, each of the cameras enjoy different megapixel count and different sensor dimensions. The K100D with its bigger sensor is going to make shooting shallower DOF simpler and the Pentax S1 will offer greater detail because of its extra 8MP. Higher resolution will let you crop pictures far more aggressively. The more aged K100D is going to be behind with regard to sensor innovation.