Sigma SD1 Merrill vs Sony A7

Let's take a deeper look at the Sigma SD1 Merrill and Sony A7, former being a Advanced DSLR while the latter is a Pro Mirrorless by competitors Sigma and Sony. There exists a large gap among the image resolutions of the SD1 Merrill (15MP) and A7 (24MP) and the SD1 Merrill (APS-C) and A7 (Full frame) feature different sensor size.

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The SD1 Merrill was released 21 months before the A7 which makes the cameras a generation apart from one another. Both of these cameras offer different body type with the Sigma SD1 Merrill being a Mid-size SLR camera and the Sony A7 being a SLR-style mirrorless camera.

Before diving in to a full comparison, below is a concise introduction of how the SD1 Merrill grades versus the A7 with respect to portability, imaging, features and an overall grade.

The following is a preview of the gallery images for Sigma SD1 Merrill & Sony Alpha A7. The complete galleries are provided at Sigma SD1 Merrill Gallery & Sony A7 Gallery.

For anybody who is planning to lug around your camera frequently, you will have to factor its weight and size. The Sigma SD1 Merrill has outside dimensions of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") along with a weight of 790 grams (1.74 lbs) while the Sony A7 has specifications of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 474 grams (1.04 lbs).

Check the Sigma SD1 Merrill and Sony A7 in our completely new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will vary based on the lens you have attached during that time. Underneath is the front view dimensions comparison of the SD1 Merrill vs the A7.

Taking into account dimensions and weight, the portability score of the SD1 Merrill and A7 is 57 and 78 respectively.

Typically, its tough to imagine the difference in sensor measurements purely by seeing technical specs. The graphic here may provide you a far better sense of the sensor sizes in the SD1 Merrill and A7.

As you have seen, both of the cameras enjoy different megapixels and different sensor measurements. The SD1 Merrill because of its smaller sensor is going to make shooting shallow DOF more challenging and the Sony A7 will produce more detail as a result of its extra 9 Megapixels. Higher resolution will also allow you to crop pictures far more aggressively. The older SD1 Merrill will be disadvantaged in sensor tech.