Sigma SD1 vs Sony A9

On this page, we are comparing the Sigma SD1 vs Sony A9, former being a Advanced DSLR while the other is a Pro Mirrorless by competitors Sigma and Sony. There exists a large gap among the resolutions of the SD1 (15MP) and A9 (24MP) and the SD1 (APS-C) and A9 (Full frame) posses totally different sensor measurements.

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The SD1 was brought out 7 years earlier than the A9 and that is a fairly serious difference as far as camera technology is concerned. The two cameras have different body design with the Sigma SD1 being a Mid-size SLR camera and the Sony A9 being a SLR-style mirrorless camera.

Before delving straight to a more detailed comparison, here is a simple synopsis of how the SD1 matches up vs the A9 with regards to portability, imaging, features and an overall rating.

Following is a sample of the gallery pictures for Sigma SD1 & Sony Alpha A9. The entire galleries are provided at Sigma SD1 Gallery & Sony A9 Gallery.

For anyone who is aiming to carry your camera frequently, you are going to need to factor its weight and proportions. The Sigma SD1 enjoys exterior measurements of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") accompanied by a weight of n/a grams (0.00 lbs) and the Sony A9 has measurements of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") and a weight of 673 grams (1.48 lbs).

Compare the Sigma SD1 vs Sony A9 in our newest Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will vary based on the lens you are using during that time. Underneath is a front view measurements comparison of the SD1 versus the A9.

Using dimensions and weight, the portability score of the SD1 and A9 is 77 and 65 respectively.

Normally, its hard to visualise the gap in sensor sizing just by researching specs. The photograph underneath should offer you a better sense of the sensor measurements in the SD1 and A9.

All in all, the 2 cameras provide different megapixels and different sensor sizing. The SD1 due to its smaller sensor will make achieving shallower DOF harder and the Sony A9 will result in extra detail having its extra 9MP. Greater resolution will make it easier to crop photos more aggressively. The older SD1 will be disadvantaged in sensor technology.