Sigma SD1 vs Sony A7S

Here is a comprehensive assessment of the Sigma SD1 and Sony A7S, former being a Advanced DSLR while the latter is a Pro Mirrorless by manufacturers Sigma and Sony. There is a noticeable difference between the image resolutions of the SD1 (15MP) and A7S (12MP) and the SD1 (APS-C) and A7S (Full frame) possess different sensor measurements.

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The SD1 was revealed 4 years prior to the A7S and that is quite a sizable difference as far as tech is concerned. Both of the cameras come with different body type with the Sigma SD1 being a Mid-size SLR camera and the Sony A7S being a SLR-style mirrorless camera.

Before going in to a full comparison, below is a concise summary of how the SD1 grades against the A7S in the way of portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Sigma SD1 & Sony Alpha A7S. The full galleries are viewable at Sigma SD1 Gallery & Sony A7S Gallery.

When you are planning to carry your camera often, you will want to consider its weight and volume. The Sigma SD1 comes with exterior dimensions of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") along with a weight of n/a grams (0.00 lbs) and the Sony A7S has sizing of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 489 grams (1.08 lbs).

Contrast the Sigma SD1 and Sony A7S in our newest Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will differ depending on the lens you have attached at that moment. Here is the front view sizing comparison of the SD1 versus the A7S.

Taking into consideration size and weight, the portability grade of the SD1 and A7S is 77 and 77 respectively.

Usually, it can be tough to visualize the contrast between sensor sizing merely by reviewing a spec sheet. The visual below will help offer you a greater sense of the sensor dimensions in the SD1 and A7S.

As you can see, both of those cameras posses different megapixel count and different sensor sizing. The SD1 using its tinier sensor is going to make getting shallow DOF more challenging and the Sigma SD1 will offer more detail because of its extra 3MP. Higher resolution can also let you crop pictures somewhat more aggressively. The older SD1 is going to be disadvantaged in sensor technology.