Sony A900 vs Sony A55

Here is a thorough comparison of the Sony A900 and Sony A55, one being a Advanced DSLR and the other is a Entry-Level DSLR and they are both produced by Sony. There exists a sizeable gap between the image resolutions of the A900 (25MP) and A55 (16MP) and the A900 (Full frame) and A55 (APS-C) use totally different sensor dimensions.

Photography Glossary

The A900 was released 22 months prior to the A55 making the cameras a generation apart from one another. Both of these cameras come with different body type with the Sony A900 being a Mid-size SLR camera and the Sony A55 being a Compact SLR camera.

Before going straight into a step-by-step comparison, below is a short highlight of how the A900 grades versus the A55 with regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Sony Alpha DSLR-A900 and Sony SLT-A55. The complete galleries are viewable at Sony A900 Gallery and Sony A55 Gallery.

When you are planning to carry your camera frequently, you will have to think about its weight and measurements. The Sony A900 enjoys physical dimensions of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") with a weight of 895 grams (1.97 lbs) while the Sony A55 has proportions of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") having a weight of 500 grams (1.10 lbs).

Check the Sony A900 and Sony A55 in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are employing during that time. The following is the front view proportions comparison of the A900 vs the A55.

Taking into account dimensions and weight, the portability score of the A900 and A55 is 54 and 67 respectively.

Typically, it can be hard to envision the contrast between sensor sizing purely by reviewing technical specs. The photograph here may give you a much better sense of the sensor dimensions in the A900 and A55.

As you have seen, each of these cameras posses different resolutions and different sensor sizing. The A900 because of its larger sensor will make shooting bokeh less difficult and the Sony A900 will deliver more detail as a result of its extra 9 Megapixels. Greater resolution will enable you to crop images somewhat more aggressively. The older A900 is going to be disadvantaged in sensor technology.