Olympus TG-810 vs Sony A7S III

Here is a in-depth review of the Olympus TG-810 versus Sony A7S III, one being a Waterproof and the latter is a Pro Mirrorless by companies Olympus and Sony. The image resolution of the TG-810 (14MP) and the A7S III (12MP) is relatively comparable but the TG-810 (1/2.3") and A7S III (Full frame) boast totally different sensor size.

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The TG-810 was revealed 10 years earlier than the A7S III and that is a fairly significant gap as far as camera technology is concerned. Both the cameras have different body design with the Olympus TG-810 being a Compact camera and the Sony A7S III being a SLR-style mirrorless camera.

Before we go right into a full comparison, here is a quick introduction of how the TG-810 scores against the A7S III in terms of portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Olympus TG-810 and Sony Alpha A7S III. The full galleries are available at Olympus TG-810 Gallery and Sony A7S III Gallery.

For anyone who is planning to carry your camera frequently, you're going to have to think about its weight and volume. The Olympus TG-810 enjoys external dimensions of 100mm x 65mm x 26mm (3.9" x 2.6" x 1.0") having a weight of 215 grams (0.47 lbs) whilst the Sony A7S III has sizing of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") accompanied by a weight of 699 grams (1.54 lbs).

Contrast the Olympus TG-810 versus Sony A7S III in the new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will change dependant on the lens you choose during that time. Here is a front view proportions comparison of the TG-810 vs the A7S III.

Factoring in dimensions and weight, the portability grade of the TG-810 and A7S III is 92 and 61 respectively.

More often than not, it is very hard to see the contrast in sensor sizing only by seeing specifications. The graphic below will provide you a better sense of the sensor sizes in the TG-810 and A7S III.

To sum up, both of the cameras have different megapixel count and different sensor sizing. The TG-810 using its smaller sensor will make achieving shallower DOF trickier and the Olympus TG-810 will provide more detail because of its extra 2 Megapixels. Higher resolution can also allow you to crop shots a bit more aggressively. The older TG-810 will be disadvantaged in sensor technology.