Sigma SD9 vs Sony A7 II

Here is a extended assessment of the Sigma SD9 and Sony A7 II, former being a Advanced DSLR while the latter is a Pro Mirrorless by brands Sigma and Sony. There is a considerable difference between the image resolutions of the SD9 (3MP) and A7 II (24MP) and the SD9 (APS-C) and A7 II (Full frame) boast totally different sensor measurements.

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The SD9 was manufactured 13 years prior to the A7 II and that is quite a large difference as far as tech is concerned. Both cameras have different body design with the Sigma SD9 being a Mid-size SLR camera and the Sony A7 II being a SLR-style mirrorless camera.

Before getting into a thorough comparison, here is a simple view of how the SD9 scores against the A7 II in terms of portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Sigma SD9 & Sony Alpha A7 II. The entire galleries are viewable at Sigma SD9 Gallery & Sony A7 II Gallery.

In case you're planning to carry your camera, you will want to factor its weight and size. The Sigma SD9 enjoys external measurements of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") and a weight of 950 grams (2.09 lbs) while the Sony A7 II has specifications of 127mm x 96mm x 60mm (5.0" x 3.8" x 2.4") with a weight of 599 grams (1.32 lbs).

Compare the Sigma SD9 and Sony A7 II in our completely new Camera & Lens Size Comparison Tool.

Take into account, the weight of an ILC will change based on the lens you choose at that time. The following is a front view dimensions comparison of the SD9 against the A7 II.

Taking into consideration size and weight, the portability score of the SD9 and A7 II is 54 and 69 respectively.

Usually, it is difficult to envision the contrast between sensor sizing purely by reading specs. The visual below might give you a clearer sense of the sensor sizing in the SD9 and A7 II.

All in all, the two cameras provide different resolutions and different sensor sizing. The SD9 because of its tinier sensor will make shooting shallow depth of field trickier and the Sony A7 II will offer you greater detail due to its extra 21MP. Higher resolution can also help you crop pictures more aggressively. The older SD9 is going to be disadvantaged in sensor tech.