Sigma SD9 vs Sony A7

On this page, we will be looking at the Sigma SD9 and Sony A7, former is a Advanced DSLR while the latter is a Pro Mirrorless by rivals Sigma and Sony. There is a sizable difference between the resolutions of the SD9 (3MP) and A7 (24MP) and the SD9 (APS-C) and A7 (Full frame) offer different sensor measurements.

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The SD9 was unveiled 12 years before the A7 which is quite a significant difference as far as tech is concerned. Both of these cameras have different body design with the Sigma SD9 being a Mid-size SLR camera and the Sony A7 being a SLR-style mirrorless camera.

Before getting straight to a step-by-step comparison, here is a brief synopsis of how the SD9 matches up against the A7 with regards to portability, imaging, features and an overall score.

This is a preview of the gallery images for Sigma SD9 & Sony Alpha A7. The full galleries are provided at Sigma SD9 Gallery & Sony A7 Gallery.

In case you're going to carry around your camera often, you'll have to consider its weight and size. The Sigma SD9 comes with outer measurements of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") with a weight of 950 grams (2.09 lbs) while the Sony A7 has specifications of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 474 grams (1.04 lbs).

Take a look at the Sigma SD9 and Sony A7 in our brand new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ depending on the lens you are utilising during that time. Following is a front view over all size comparison of the SD9 versus the A7.

Taking into consideration size and weight, the portability grade of the SD9 and A7 is 54 and 78 respectively.

In many cases, it can be tough to picture the contrast between sensor sizes purely by reading a spec sheet. The picture below should offer you a far better sense of the sensor measurements in the SD9 and A7.

As you can see, both the cameras have different megapixel count and different sensor sizes. The SD9 having a tinier sensor is going to make shooting bokeh trickier and the Sony A7 will deliver extra detail having an extra 21MP. Higher resolution will enable you to crop photographs a bit more aggressively. The more aged SD9 is going to be disadvantaged with regard to sensor technology.