Sigma SD15 vs Sony A7R III

On this page, we are contrasting the Sigma SD15 and Sony A7R III, one is a Advanced DSLR and the other is a Pro Mirrorless by companies Sigma and Sony. There is a huge difference among the image resolutions of the SD15 (5MP) and A7R III (42MP) and the SD15 (APS-C) and A7R III (Full frame) boast different sensor measurements.

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The SD15 was launched 8 years prior to the A7R III which is a fairly significant gap as far as camera tech is concerned. Both the cameras have different body design with the Sigma SD15 being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before getting into a complete comparison, here is a short summation of how the SD15 matches up versus the A7R III with regard to portability, imaging, features and an overall score.

Here is a sample of the gallery pictures for Sigma SD15 and Sony Alpha A7R III. The complete galleries are available at Sigma SD15 Gallery and Sony A7R III Gallery.

When you are going to carry around your camera often, you'll have to factor in its weight and dimensions. The Sigma SD15 has got exterior dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") along with a weight of 750 grams (1.65 lbs) and the Sony A7R III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Look at the Sigma SD15 and Sony A7R III in the latest Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at the time. The following is a front view measurement comparison of the SD15 versus the A7R III.

Looking at size and weight, the portability grade of the SD15 and A7R III is 59 and 63 respectively.

Oftentimes, it is very hard to imagine the difference in sensor sizes simply by seeing specifications. The image underneath will provide you a clearer sense of the sensor dimensions in the SD15 and A7R III.

Plainly, both cameras provide different megapixel count and different sensor sizes. The SD15 due to its smaller sensor is going to make getting shallow depth of field trickier and the Sony A7R III will show extra detail utilizing its extra 37MP. Greater resolution will let you crop pics more aggressively. The more aged SD15 will be behind when it comes to sensor innovation.