Pentax Q vs Sony A7R III

Below, we are comparing the Pentax Q vs Sony A7R III, one being a Entry-Level Mirrorless and the other is a Pro Mirrorless by manufacturers Pentax and Sony. There is a sizeable difference between the sensor resolutions of the Q (12MP) and A7R III (42MP) and the Q (1/2.3") and A7R III (Full frame) feature totally different sensor sizes.

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The Q was introduced 7 years before the A7R III and that is quite a large gap as far as tech is concerned. The two cameras come with different body type with the Pentax Q being a Rangefinder-style mirrorless camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving straight into a complete comparison, below is a concise view of how the Q scores against the A7R III in regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Pentax Q and Sony Alpha A7R III. The whole galleries are available at Pentax Q Gallery and Sony A7R III Gallery.

If you're going to carry your camera often, you have to think about its weight and size. The Pentax Q provides exterior dimensions of 98mm x 57mm x 31mm (3.9" x 2.2" x 1.2") and a weight of 180 grams (0.40 lbs) while the Sony A7R III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 657 grams (1.45 lbs).

Check out the Pentax Q vs Sony A7R III in the new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are working with at that time. Below is the front view proportions comparison of the Q and the A7R III.

Looking at size and weight, the portability rating of the Q and A7R III is 93 and 63 respectively.

Usually, it's difficult to see the gap between sensor sizing merely by reviewing specifications. The visual underneath may offer you a clearer sense of the sensor dimensions in the Q and A7R III.

To sum up, both of the cameras have got different resolutions and different sensor sizing. The Q with its tinier sensor will make getting shallow depth of field tougher and the Sony A7R III will deliver greater detail using its extra 30MP. Greater resolution can also allow you to crop images much more aggressively. The older Q is going to be behind in sensor innovation.