Sigma Quattro vs Sony A7R III

Let's look closer at the Sigma Quattro versus Sony A7R III, former being a Advanced Mirrorless while the latter is a Pro Mirrorless by brands Sigma and Sony. There is a large difference between the image resolutions of the Quattro (29MP) and A7R III (42MP) and the Quattro (APS-C) and A7R III (Full frame) provide different sensor sizes.

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The Quattro was announced 20 months before the A7R III which makes them a generation apart from each other. Both of the cameras have different body design with the Sigma Quattro being a Rangefinder-style mirrorless camera and the Sony A7R III being a SLR-style mirrorless camera.

Before going into a comprehensive comparison, here is a short highlight of how the Quattro grades versus the A7R III for portability, imaging, features and an overall rating.

Following is a preview of the gallery photos for Sigma sd Quattro & Sony Alpha A7R III. The whole galleries are provided at Sigma Quattro Gallery & Sony A7R III Gallery.

If you are intending to carry your camera, you will need to factor in its weight and measurements. The Sigma Quattro comes with external measurements of 147mm x 95mm x 91mm (5.8" x 3.7" x 3.6") with a weight of 625 grams (1.38 lbs) while the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

See the Sigma Quattro versus Sony A7R III in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ depending on the lens you are employing at the time. Following is a front view physical size comparison of the Quattro versus the A7R III.

Taking into consideration size and weight, the portability score of the Quattro and A7R III is 63 and 63 respectively.

Usually, it's difficult to visualize the gap between sensor sizing simply by going over specifications. The photograph underneath should give you a much better sense of the sensor measurements in the Quattro and A7R III.

To sum up, each of these cameras provide different resolutions and different sensor sizing. The Quattro using its tinier sensor is going to make achieving shallower DOF tougher and the Sony A7R III will deliver greater detail with its extra 13 Megapixels. Higher resolution will also enable you to crop shots more aggressively. The older Quattro is going to be disadvantaged when it comes to sensor technology.