Olympus TG-4 vs Sony A7 III

The following is a in depth review of the Olympus TG-4 versus Sony A7 III, one is a Waterproof and the other is a Pro Mirrorless by brands Olympus and Sony. There is a huge difference among the image resolutions of the TG-4 (16MP) and A7 III (24MP) and the TG-4 (1/2.3") and A7 III (Full frame) provide totally different sensor size.

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The TG-4 was released 3 years prior to the A7 III which is a fairly significant gap as far as camera tech is concerned. Both the cameras have different body design with the Olympus TG-4 being a Compact camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving right into a step-by-step comparison, here is a simple view of how the TG-4 scores vs the A7 III in regards to portability, imaging, features and an overall mark.

This is a sample of the gallery pictures for Olympus Tough TG-4 and Sony Alpha A7 III. The complete galleries are provided at Olympus TG-4 Gallery and Sony A7 III Gallery.

For those who are looking to travel with your camera frequently, you need to take into account its weight and size. The Olympus TG-4 has outer dimensions of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") and a weight of 247 grams (0.54 lbs) whilst the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

Check the Olympus TG-4 versus Sony A7 III in the all new Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will change based on the lens you are using at that time. Below is a front view sizing comparison of the TG-4 vs the A7 III.

Taking into consideration size and weight, the portability score of the TG-4 and A7 III is 90 and 63 respectively.

In many cases, its tough to see the contrast in sensor dimensions only by looking through a spec sheet. The picture here might give you a better sense of the sensor dimensions in the TG-4 and A7 III.

As you can see, both of those cameras provide different resolutions and different sensor dimensions. The TG-4 because of its smaller sensor will make shooting bokeh trickier and the Sony A7 III will result in more detail as a result of its extra 8MP. Greater resolution will make it easier to crop pics more aggressively. The more aged TG-4 will be behind with regard to sensor innovation.