Sigma SD9 vs Sony A99

Here is a in-depth review of the Sigma SD9 vs Sony A99, both Advanced DSLR cameras by competitors Sigma and Sony. There exists a considerable gap among the image resolutions of the SD9 (3MP) and A99 (24MP) and the SD9 (APS-C) and A99 (Full frame) have totally different sensor size.

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The SD9 was unveiled 11 years before the A99 and that is a fairly large difference as far as camera technology is concerned. The two cameras have the same body design (Mid-size SLR).

Before going straight to a thorough comparison, here is a quick summation of how the SD9 grades vs the A99 in terms of portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Sigma SD9 & Sony SLT-A99. The full galleries are provided at Sigma SD9 Gallery & Sony A99 Gallery.

In case you're going to carry your camera often, you'll need to take into account its weight and measurements. The Sigma SD9 enjoys outside measurements 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 A99 has proportions of 147mm x 111mm x 78mm (5.8" x 4.4" x 3.1") and a weight of 812 grams (1.79 lbs).

Take a look at the Sigma SD9 vs Sony A99 in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ dependant on the lens you are working with during that time. The following is a front view measurement comparison of the SD9 against the A99.

Taking into account dimensions and weight, the portability score of the SD9 and A99 is 54 and 57 respectively.

Quite often, its difficult to see the gap in sensor sizing simply by viewing specs. The graphic below may offer you a stronger sense of the sensor measurements in the SD9 and A99.

As you can plainly see, each of these cameras provide different resolutions and different sensor sizing. The SD9 with its smaller sensor will make achieving shallower DOF more difficult and the Sony A99 will provide you with more detail having an extra 21 Megapixels. Higher resolution will also enable you to crop photographs more aggressively. The older SD9 will be behind with regard to sensor technology.