Sigma SD9 vs Sony A900

Below, we are looking at the Sigma SD9 and Sony A900, both Advanced DSLR digital cameras by competitors Sigma and Sony. There exists a large gap between the sensor resolutions of the SD9 (3MP) and A900 (25MP) and the SD9 (APS-C) and A900 (Full frame) use totally different sensor sizes.

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The SD9 was announced 6 years before the A900 and that is quite a serious difference as far as technology is concerned. Each of these cameras come with the identical body type (Mid-size SLR).

Before getting in to a full comparison, below is a simple introduction of how the SD9 scores vs the A900 for portability, imaging, features and an overall grade.

Following is a sample of the gallery pictures for Sigma SD9 & Sony Alpha DSLR-A900. The whole galleries are provided at Sigma SD9 Gallery & Sony A900 Gallery.

For those who are planning to lug around your camera regularly, you are going to need to factor in its weight and measurements. The Sigma SD9 provides outside dimensions of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") accompanied by a weight of 950 grams (2.09 lbs) whilst the Sony A900 has proportions of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") along with a weight of 895 grams (1.97 lbs).

Analyze the Sigma SD9 and Sony A900 in our newest Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will differ depending on the lens you are using at the time. Below is the front view measurement comparison of the SD9 compared to the A900.

Factoring in dimensions and weight, the portability rating of the SD9 and A900 is 54 and 54 respectively.

Quite often, it can be tough to see the difference between sensor measurements simply by going over specifications. The graphic underneath will help give you a clearer sense of the sensor sizes in the SD9 and A900.

To sum up, the 2 cameras posses different megapixels and different sensor measurements. The SD9 using its tinier sensor will make achieving bokeh more difficult and the Sony A900 will offer you greater detail with its extra 22 Megapixels. Greater resolution can also help you crop images somewhat more aggressively. The older SD9 is going to be disadvantaged in sensor tech.