Olympus TG-4 vs Sony A7R III

On this page, we are matching up the Olympus TG-4 and Sony A7R III, one being a Waterproof and the other is a Pro Mirrorless by companies Olympus and Sony. There exists a big gap between the resolutions of the TG-4 (16MP) and A7R III (42MP) and the TG-4 (1/2.3") and A7R III (Full frame) have totally different sensor sizing.

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The TG-4 was manufactured 3 years prior to the A7R III and that is quite a big gap as far as technology is concerned. Both of the cameras have different body design with the Olympus TG-4 being a Compact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before diving right into a in-depth comparison, here is a simple summation of how the TG-4 grades against the A7R III when it comes to portability, imaging, features and an overall rating.

Following is a sample of the gallery pictures for Olympus Tough TG-4 and Sony Alpha A7R III. The entire galleries are provided at Olympus TG-4 Gallery and Sony A7R III Gallery.

For anyone who is aiming to carry your camera frequently, you will have to factor in its weight and dimensions. The Olympus TG-4 offers physical dimensions of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") having a weight of 247 grams (0.54 lbs) while the Sony A7R III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Examine the Olympus TG-4 and Sony A7R III in the new Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are utilising at that moment. Below is a front view overall size comparison of the TG-4 vs the A7R III.

Taking into account dimensions and weight, the portability score of the TG-4 and A7R III is 90 and 63 respectively.

Sometimes, it is hard to visualise the contrast between sensor sizing only by looking at specifications. The visual here might give you a more clear sense of the sensor sizes in the TG-4 and A7R III.

To sum up, each of these cameras have different megapixels and different sensor sizing. The TG-4 featuring a tinier sensor will make achieving bokeh trickier and the Sony A7R III will resolve greater detail due to its extra 26MP. Greater resolution will also help you crop pics a bit more aggressively. The older TG-4 is going to be behind when it comes to sensor innovation.