Sony A7R III vs Sony TX20

Following is a complete comparison of the Sony A7R III versus Sony TX20, former is a Pro Mirrorless while the other is a Ultracompact and they are both designed by Sony. There is a sizable difference between the sensor resolutions of the A7R III (42MP) and TX20 (16MP) and the A7R III (Full frame) and TX20 (1/2.3") enjoy different sensor sizing.

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The A7R III was introduced 5 years after the TX20 which is quite a significant difference as far as tech is concerned. Both cameras come with different body type with the Sony A7R III being a SLR-style mirrorless camera and the Sony TX20 being a Ultracompact camera.

Before diving through a thorough comparison, below is a simple view of how the A7R III matches up vs the TX20 in relation to portability, imaging, features and an overall score.

Here is a sample of the gallery pics for Sony Alpha A7R III & Sony Cyber-shot DSC-TX20. The whole galleries are viewable at Sony A7R III Gallery & Sony TX20 Gallery.

For anybody who is going to carry around your camera frequently, you're going to have to consider its weight and proportions. The Sony A7R III enjoys outer dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 657 grams (1.45 lbs) while the Sony TX20 has measurements of 96mm x 56mm x 18mm (3.8" x 2.2" x 0.7") with a weight of 133 grams (0.29 lbs).

Analyze the Sony A7R III versus Sony TX20 in our newest Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change based on the lens you use at that time. Below is the front view over all size comparison of the A7R III compared to the TX20.

Looking at size and weight, the portability rating of the A7R III and TX20 is 63 and 96 respectively.

In many cases, it is very difficult to visualize the difference between sensor sizes purely by checking a spec sheet. The pic underneath might provide you a much better sense of the sensor sizes in the A7R III and TX20.

As you can see, both of those cameras have got different resolutions and different sensor sizes. The A7R III with its larger sensor is going to make getting shallow DOF simpler and the Sony A7R III will give greater detail using its extra 26MP. Greater resolution will let you crop photos much more aggressively. The newer A7R III should have an edge with regard to sensor technology.