Nikon D800 vs Sony A7R III

Below is a extended comparison of the Nikon D800 vs Sony A7R III, one being a Advanced DSLR and the latter is a Pro Mirrorless by competitors Nikon and Sony. The sensor resolution of the D800 (36MP) and the A7R III (42MP) is relatively well matched and they use the exact same sensor size (Full frame).

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The D800 was manufactured 6 years prior to the A7R III and that is quite a sizable gap as far as technology is concerned. Each of the cameras come with different body type with the Nikon D800 being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before getting through a full comparison, below is a simple highlight of how the D800 matches up versus the A7R III when it comes to portability, imaging, features and an overall grade.

This is a preview of the gallery photos for Nikon D800 and Sony Alpha A7R III. The entire galleries are provided at Nikon D800 Gallery and Sony A7R III Gallery.

In case you're aiming to lug around your camera frequently, you should take into account its weight and measurements. The Nikon D800 comes with outer measurements of 146mm x 123mm x 82mm (5.7" x 4.8" x 3.2") having a weight of 900 grams (1.98 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).

Take a look at the Nikon D800 vs Sony A7R III in the new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will vary based on the lens you use at that moment. Following is the front view sizing comparison of the D800 and the A7R III.

Taking into consideration dimensions and weight, the portability score of the D800 and A7R III is 54 and 63 respectively.

Quite often, its hard to visualise the difference between sensor measurements only by reading through a spec sheet. The graphic underneath will provide you a better sense of the sensor sizing in the D800 and A7R III.

As you can see, both cameras posses the exact same sensor measurements albeit not the same MP. You should count on the Sony A7R III to give you more detail due to its extra 6MP. Higher resolution will also help you crop pictures somewhat more aggressively. The older D800 is going to be disadvantaged with regard to sensor tech.