Sigma SD15 vs Sony A9 II

Here is a extensive assessment of the Sigma SD15 and Sony A9 II, former being a Advanced DSLR while the latter is a Pro Mirrorless by manufacturers Sigma and Sony. There exists a considerable gap between the image resolutions of the SD15 (5MP) and A9 II (24MP) and the SD15 (APS-C) and A9 II (Full frame) have different sensor sizes.

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The SD15 was unveiled 10 years earlier than the A9 II and that is quite a large difference as far as technology is concerned. Each of these cameras feature different body design with the Sigma SD15 being a Mid-size SLR camera and the Sony A9 II being a SLR-style mirrorless camera.

Before getting into a comprehensive comparison, here is a brief summation of how the SD15 scores against the A9 II in the way of portability, imaging, features and an overall rating.

This is a preview of the gallery photos for Sigma SD15 & Sony Alpha A9 Mark II. The full galleries are provided at Sigma SD15 Gallery & Sony A9 II Gallery.

For those who are aiming to carry your camera regularly, you need to factor in its weight and volume. The Sigma SD15 offers outer dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") with a weight of 750 grams (1.65 lbs) and the Sony A9 II has sizing of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") with a weight of 678 grams (1.49 lbs).

Take a look at the Sigma SD15 and Sony A9 II in our brand new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will change dependant on the lens you use at the time. Following is a front view scale comparison of the SD15 and the A9 II.

Looking at dimensions and weight, the portability rating of the SD15 and A9 II is 59 and 62 respectively.

Sometimes, it's tough to imagine the difference between sensor sizing merely by looking at technical specs. The photograph here might provide you a more clear sense of the sensor dimensions in the SD15 and A9 II.

As you can tell, both of the cameras come with different megapixel count and different sensor sizing. The SD15 with its tinier sensor is going to make getting shallower depth of field more difficult and the Sony A9 II will give you extra detail having an extra 19 Megapixels. Higher resolution will allow you to crop photographs a good deal more aggressively. The older SD15 is going to be disadvantaged in sensor innovation.