Sigma SD9 vs Sony A390

Following is a extensive overview of the Sigma SD9 and Sony A390, one is a Advanced DSLR and the latter is a Entry-Level DSLR by competitors Sigma and Sony. There is a big difference between the image resolutions of the SD9 (3MP) and A390 (14MP) but both cameras offer the identical sensor dimensions (APS-C).

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The SD9 was manufactured 8 years prior to the A390 which is quite a big gap as far as tech is concerned. Both of the cameras feature different body design with the Sigma SD9 being a Mid-size SLR camera and the Sony A390 being a Compact SLR camera.

Before going into a complete comparison, here is a brief summary of how the SD9 grades against the A390 with regard to portability, imaging, features and an overall score.

Following is a preview of the gallery photos for Sigma SD9 and Sony Alpha DSLR-A390. The entire galleries are viewable at Sigma SD9 Gallery and Sony A390 Gallery.

For anyone who is planning to carry around your camera, you'll need to take into account its weight and measurements. The Sigma SD9 offers exterior 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) and the Sony A390 has proportions of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") having a weight of 549 grams (1.21 lbs).

Take a look at the Sigma SD9 and Sony A390 in the all new Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose at the time. Here is a front view measurement comparison of the SD9 against the A390.

Using size and weight, the portability grade of the SD9 and A390 is 54 and 66 respectively.

Usually, it can be hard to picture the difference between sensor sizes simply by reviewing specs. The pic underneath will help provide you a more clear sense of the sensor dimensions in the SD9 and A390.

All in all, the two cameras feature the identical sensor size albeit different MP. You should count on the Sony A390 to offer greater detail due to its extra 11MP. Higher resolution can also help you crop pictures way more aggressively. The more aged SD9 is going to be disadvantaged when it comes to sensor innovation.