Sigma Quattro vs Sony A7

Its time to look a bit more closely at the Sigma Quattro vs Sony A7, former being a Advanced Mirrorless while the latter is a Pro Mirrorless by brands Sigma and Sony. There is a noticeable difference between the resolutions of the Quattro (29MP) and A7 (24MP) and the Quattro (APS-C) and A7 (Full frame) boast totally different sensor sizing.

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The Quattro was manufactured 2 years later than the A7 and that is quite a sizable difference as far as tech is concerned. Both of the cameras have different body design with the Sigma Quattro being a Rangefinder-style mirrorless camera and the Sony A7 being a SLR-style mirrorless camera.

Before diving straight to a thorough comparison, here is a brief highlight of how the Quattro scores versus the A7 when considering portability, imaging, features and an overall grade.

This is a preview of the gallery photos for Sigma sd Quattro & Sony Alpha A7. The entire galleries are viewable at Sigma Quattro Gallery & Sony A7 Gallery.

When you are planning to lug around your camera, you'll need to think about its weight and volume. The Sigma Quattro offers outside measurements of 147mm x 95mm x 91mm (5.8" x 3.7" x 3.6") along with a weight of 625 grams (1.38 lbs) whilst the Sony A7 has sizing of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") and a weight of 474 grams (1.04 lbs).

Analyze the Sigma Quattro vs Sony A7 in our brand new Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will change based on the lens you choose at that moment. Underneath is a front view overall size comparison of the Quattro vs the A7.

Factoring in size and weight, the portability rating of the Quattro and A7 is 63 and 78 respectively.

In many cases, its tough to visualise the difference between sensor measurements purely by looking at technical specs. The photograph here should provide you a far better sense of the sensor measurements in the Quattro and A7.

As you can tell, both of the cameras have different resolutions and different sensor measurements. The Quattro featuring a tinier sensor will make achieving shallow DOF more difficult and the Sigma Quattro will give greater detail due to its extra 5 Megapixels. Higher resolution can also make it easier to crop pictures a bit more aggressively. The more modern Quattro is going to have an edge in sensor innovation.