Sigma SD1 vs Sony A7

Below, we will be contrasting the Sigma SD1 vs Sony A7, one being a Advanced DSLR and the latter is a Pro Mirrorless by rivals Sigma and Sony. There is a big difference between the image resolutions of the SD1 (15MP) and A7 (24MP) and the SD1 (APS-C) and A7 (Full frame) feature different sensor sizes.

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The SD1 was released 4 years before the A7 and that is quite a big gap as far as tech is concerned. The two cameras come with different body type with the Sigma SD1 being a Mid-size SLR camera and the Sony A7 being a SLR-style mirrorless camera.

Before diving through a in-depth comparison, below is a concise view of how the SD1 scores against the A7 when considering portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Sigma SD1 and Sony Alpha A7. The complete galleries are available at Sigma SD1 Gallery and Sony A7 Gallery.

For anybody who is planning to lug around your camera frequently, you will want to factor in its weight and measurements. The Sigma SD1 enjoys external measurements of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") and a weight of n/a grams (0.00 lbs) and the Sony A7 has proportions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") accompanied by a weight of 474 grams (1.04 lbs).

Check out the Sigma SD1 vs Sony A7 in the latest Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you are utilising at that moment. Underneath is the front view measurements comparison of the SD1 and the A7.

Factoring in size and weight, the portability grade of the SD1 and A7 is 77 and 78 respectively.

Often, it's difficult to imagine the contrast between sensor measurements just by reading through a spec sheet. The visual underneath will help give you a clearer sense of the sensor sizing in the SD1 and A7.

As you can see, the 2 cameras posses different resolutions and different sensor measurements. The SD1 featuring a tinier sensor is going to make achieving shallower DOF more challenging and the Sony A7 will give you more detail as a result of its extra 9 Megapixels. Higher resolution can also let you crop shots somewhat more aggressively. The older SD1 is going to be disadvantaged with regard to sensor technology.