Pentax K100D S vs Sony A900

Below is a detailed review of the Pentax K100D S vs Sony A900, one being a Entry-Level DSLR and the latter is a Advanced DSLR by companies Pentax and Sony. There exists a big gap between the resolutions of the K100D S (6MP) and A900 (25MP) and the K100D S (APS-C) and A900 (Full frame) enjoy different sensor size.

Photography Glossary

The K100D S was revealed 16 months earlier than the A900 which makes the cameras a generation apart from one another. Both of these cameras offer different body type with the Pentax K100D S being a Compact SLR camera and the Sony A900 being a Mid-size SLR camera.

Before diving in to a detailed comparison, below is a concise introduction of how the K100D S grades vs the A900 when considering portability, imaging, features and an overall grade.

The following is a preview of the gallery photos for Pentax K100D Super and Sony Alpha DSLR-A900. The full galleries are provided at Pentax K100D S Gallery and Sony A900 Gallery.

For anyone who is going to lug around your camera regularly, you're going to have to think about its weight and proportions. The Pentax K100D S enjoys physical measurements of 129mm x 91mm x 71mm (5.1" x 3.6" x 2.8") and a weight of 646 grams (1.42 lbs) while the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") along with a weight of 895 grams (1.97 lbs).

Look at the Pentax K100D S vs Sony A900 in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary dependant on the lens you use at the time. Below is the front view dimension comparison of the K100D S compared to the A900.

Taking into consideration dimensions and weight, the portability score of the K100D S and A900 is 65 and 54 respectively.

Sometimes, it's tough to visualize the gap between sensor measurements only by reading through specifications. The graphic here might give you a clearer sense of the sensor measurements in the K100D S and A900.

Plainly, both of the cameras offer different resolutions and different sensor measurements. The K100D S using its tinier sensor is going to make getting bokeh harder and the Sony A900 will resolve greater detail because of its extra 19MP. Higher resolution will let you crop shots a little more aggressively. The older K100D S is going to be behind in sensor innovation.