Sony A7R III vs Sony A57

Following is a detailed analysis of the Sony A7R III and Sony A57, one is a Pro Mirrorless and the latter is a Entry-Level DSLR and both of them are sold by Sony. There exists a big gap among the image resolutions of the A7R III (42MP) and A57 (16MP) and the A7R III (Full frame) and A57 (APS-C) boast different sensor size.

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The A7R III was revealed 5 years after the A57 which is a fairly big gap as far as camera technology is concerned. Both of the cameras have different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony A57 being a Compact SLR camera.

Before diving into a more detailed comparison, here is a brief introduction of how the A7R III grades vs the A57 for portability, imaging, features and an overall score.

Below is a preview of the gallery photos for Sony Alpha A7R III and Sony SLT-A57. The full galleries are provided at Sony A7R III Gallery and Sony A57 Gallery.

When you are intending to carry around your camera, you should think about its weight and measurements. The Sony A7R III offers exterior measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs) whilst the Sony A57 has proportions of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") accompanied by a weight of 618 grams (1.36 lbs).

Check out the Sony A7R III and Sony A57 in the all new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will change dependant on the lens you have attached at the time. Underneath is a front view measurements comparison of the A7R III and the A57.

Considering dimensions and weight, the portability score of the A7R III and A57 is 63 and 64 respectively.

Normally, it is tough to visualize the gap in sensor sizes merely by checking out a spec sheet. The image here should give you a far better sense of the sensor measurements in the A7R III and A57.

As you can see, both cameras have different megapixels and different sensor sizes. The A7R III using its bigger sensor is going to make shooting shallower DOF easier and the Sony A7R III will produce extra detail because of its extra 26MP. Higher resolution will make it easier to crop photographs a bit more aggressively. The fresher A7R III provides an edge in sensor innovation.