Pentax K100D vs Sony A99

Lets look a little more closely at the Pentax K100D and Sony A99, former being a Entry-Level DSLR while the other is a Advanced DSLR by companies Pentax and Sony. There exists a substantial gap between the sensor resolutions of the K100D (6MP) and A99 (24MP) and the K100D (APS-C) and A99 (Full frame) provide different sensor dimensions.

Photography Glossary

The K100D was released 7 years earlier than the A99 and that is quite a big difference as far as technology is concerned. Each of these cameras feature different body design with the Pentax K100D being a Compact SLR camera and the Sony A99 being a Mid-size SLR camera.

Before we go straight to a in depth comparison, here is a short overview of how the K100D scores versus the A99 in regards to portability, imaging, features and an overall grade.

The following is a sample of the gallery pics for Pentax K100D & Sony SLT-A99. The complete galleries are viewable at Pentax K100D Gallery & Sony A99 Gallery.

For anyone who is planning to lug around your camera frequently, you'll have to factor in its weight and volume. The Pentax K100D provides outer measurements of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") with a weight of 660 grams (1.46 lbs) whilst the Sony A99 has sizing of 147mm x 111mm x 78mm (5.8" x 4.4" x 3.1") accompanied by a weight of 812 grams (1.79 lbs).

Check out the Pentax K100D and Sony A99 in our newest Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will change dependant on the lens you have attached at that time. Underneath is a front view dimension comparison of the K100D vs the A99.

Taking into consideration dimensions and weight, the portability grade of the K100D and A99 is 64 and 57 respectively.

Sometimes, it's tough to picture the gap between sensor measurements only by reading through specs. The photograph below should provide you a stronger sense of the sensor measurements in the K100D and A99.

All in all, both of these cameras come with different resolutions and different sensor measurements. The K100D due to its tinier sensor is going to make achieving shallow DOF trickier and the Sony A99 will give you extra detail as a result of its extra 18 Megapixels. Greater resolution can also make it easier to crop images a good deal more aggressively. The older K100D is going to be disadvantaged with regard to sensor technology.