Sony A7 III vs Sony A57

In this write-up, we will be evaluating the Sony A7 III vs Sony A57, one being a Pro Mirrorless and the latter is a Entry-Level DSLR and both of them are offered by Sony. There exists a significant gap between the sensor resolutions of the A7 III (24MP) and A57 (16MP) and the A7 III (Full frame) and A57 (APS-C) come with different sensor size.

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The A7 III was brought out 5 years later than the A57 and that is quite a sizable gap as far as technology is concerned. The two cameras offer different body type with the Sony A7 III being a SLR-style mirrorless camera and the Sony A57 being a Compact SLR camera.

Before going straight into a comprehensive comparison, below is a quick summation of how the A7 III scores vs the A57 with respect to portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Sony Alpha A7 III and Sony SLT-A57. The entire galleries are viewable at Sony A7 III Gallery and Sony A57 Gallery.

For anybody who is planning to carry your camera frequently, you have to consider its weight and size. The Sony A7 III has got outside dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 650 grams (1.43 lbs) whilst the Sony A57 has specifications of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") having a weight of 618 grams (1.36 lbs).

Look at the Sony A7 III vs Sony A57 in the latest Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose at that time. The following is the front view scale comparison of the A7 III vs the A57.

Taking into consideration dimensions and weight, the portability grade of the A7 III and A57 is 63 and 64 respectively.

Normally, it can be hard to imagine the contrast between sensor sizing only by going over specs. The photograph here may give you a much better sense of the sensor dimensions in the A7 III and A57.

All in all, each of these cameras offer different megapixels and different sensor sizing. The A7 III due to its bigger sensor is going to make getting shallower depth of field easier and the Sony A7 III will offer you greater detail having its extra 8 Megapixels. Higher resolution will also allow you to crop shots a little more aggressively. The more recent A7 III should have an advantage when it comes to sensor tech.