Pentax Efina vs Sony A7R III

Lets take a deeper look at the Pentax Efina versus Sony A7R III, former being a Ultracompact while the other is a Pro Mirrorless by competitors Pentax and Sony. There is a considerable difference among the sensor resolutions of the Efina (14MP) and A7R III (42MP) and the Efina (1/2.3") and A7R III (Full frame) boast different sensor sizing.

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The Efina was unveiled 5 years before the A7R III and that is a fairly large difference as far as camera tech is concerned. Both cameras have different body design with the Pentax Efina being a Ultracompact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before getting right into a thorough comparison, here is a concise summation of how the Efina grades vs the A7R III when considering portability, imaging, features and an overall rating.

This is a sample of the gallery pics for Pentax Efina & Sony Alpha A7R III. The full galleries are viewable at Pentax Efina Gallery & Sony A7R III Gallery.

For those who are aiming to carry your camera, you will want to factor its weight and dimensions. The Pentax Efina provides outer dimensions of 87mm x 54mm x 21mm (3.4" x 2.1" x 0.8") with a weight of 91 grams (0.20 lbs) whilst the Sony A7R III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

Contrast the Pentax Efina versus Sony A7R III in our newest Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will differ dependant on the lens you use at that moment. Underneath is a front view dimension comparison of the Efina vs the A7R III.

Factoring in size and weight, the portability rating of the Efina and A7R III is 97 and 63 respectively.

Oftentimes, it is very tough to picture the difference in sensor sizing only by checking out specs. The graphic below might give you a much better sense of the sensor dimensions in the Efina and A7R III.

As you can plainly see, the two cameras have different megapixels and different sensor sizing. The Efina with its smaller sensor is going to make getting shallow DOF trickier and the Sony A7R III will produce greater detail having an extra 28 Megapixels. Greater resolution will also enable you to crop pics a bit more aggressively. The older Efina will be behind in sensor tech.