Pentax K-7 vs Sony A900

Here, we will be matching up the Pentax K-7 and Sony A900, both Advanced DSLR cameras by competitors Pentax and Sony. There is a considerable difference among the image resolutions of the K-7 (15MP) and A900 (25MP) and the K-7 (APS-C) and A900 (Full frame) provide totally different sensor size.

Photography Glossary

The K-7 was released 12 months later than the A900 which means that they are both of a similar age. Each of these cameras feature the same body design (Mid-size SLR).

Before going right into a thorough comparison, here is a simple synopsis of how the K-7 grades against the A900 with regard to portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Pentax K-7 & Sony Alpha DSLR-A900. The complete galleries are viewable at Pentax K-7 Gallery & Sony A900 Gallery.

If you are going to carry your camera often, you'll have to factor its weight and measurements. The Pentax K-7 enjoys physical dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") along with a weight of 750 grams (1.65 lbs) and the Sony A900 has proportions of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") having a weight of 895 grams (1.97 lbs).

Compare the Pentax K-7 and Sony A900 in our brand new Camera & Lens Size Comparison Tool.

Always remember, the weight of an ILC will differ based on the lens you are working with at the time. Below is a front view sizing comparison of the K-7 versus the A900.

Using size and weight, the portability score of the K-7 and A900 is 60 and 54 respectively.

In many cases, it is very difficult to see the gap in sensor sizing merely by going through technical specs. The visual below should give you a better sense of the sensor dimensions in the K-7 and A900.

As you can tell, the 2 cameras feature different megapixels and different sensor sizing. The K-7 featuring a smaller sensor will make shooting shallow DOF tougher and the Sony A900 will produce extra detail as a result of its extra 10 Megapixels. Higher resolution can also help you crop shots way more aggressively. The newer K-7 will have a benefit when it comes to sensor innovation.