Olympus TG-820 iHS vs Sony A7R IV

Let's look much closer at the Olympus TG-820 iHS and Sony A7R IV, one being a Waterproof and the latter is a Pro Mirrorless by manufacturers Olympus and Sony. There exists a significant gap between the image resolutions of the TG-820 iHS (12MP) and A7R IV (61MP) and the TG-820 iHS (1/2.3") and A7R IV (Full frame) feature totally different sensor sizes.

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The TG-820 iHS was announced 8 years earlier than the A7R IV and that is quite a sizable gap as far as technology is concerned. Both cameras offer different body type with the Olympus TG-820 iHS being a Compact camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before getting through a more detailed comparison, below is a simple view of how the TG-820 iHS grades versus the A7R IV with regard to portability, imaging, features and an overall grade.

This is a preview of the gallery photos for Olympus TG-820 iHS and Sony Alpha A7R IV. The whole galleries are available at Olympus TG-820 iHS Gallery and Sony A7R IV Gallery.

In case you're planning to lug around your camera regularly, you need to think about its weight and proportions. The Olympus TG-820 iHS has outer dimensions of 101mm x 65mm x 26mm (4.0" x 2.6" x 1.0") having a weight of 206 grams (0.45 lbs) while the Sony A7R IV has measurements of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") with a weight of 665 grams (1.47 lbs).

Check out the Olympus TG-820 iHS and Sony A7R IV in the all new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will vary based on the lens you use at the time. Here is the front view proportions comparison of the TG-820 iHS compared to the A7R IV.

Considering dimensions and weight, the portability score of the TG-820 iHS and A7R IV is 92 and 62 respectively.

More often than not, its difficult to see the contrast between sensor measurements just by reviewing technical specs. The graphic below will help provide you a more clear sense of the sensor sizes in the TG-820 iHS and A7R IV.

As you have seen, the two cameras offer different megapixel count and different sensor measurements. The TG-820 iHS with its tinier sensor will make shooting bokeh harder and the Sony A7R IV will deliver more detail with its extra 49 Megapixels. Higher resolution can also make it easier to crop shots a little more aggressively. The older TG-820 iHS is going to be behind in sensor innovation.