Olympus TG-870 vs Sony A7R IV

Below, we are looking at the Olympus TG-870 versus Sony A7R IV, one being a Ultracompact and the other is a Pro Mirrorless by manufacturers Olympus and Sony. There is a sizeable difference among the image resolutions of the TG-870 (16MP) and A7R IV (61MP) and the TG-870 (1/2.3") and A7R IV (Full frame) come with different sensor sizing.

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The TG-870 was announced 4 years earlier than the A7R IV and that is a fairly large gap as far as camera tech is concerned. The two cameras come with different body type with the Olympus TG-870 being a Ultracompact camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before we go through a complete comparison, below is a brief overview of how the TG-870 matches up against the A7R IV for portability, imaging, features and an overall rating.

Below is a sample of the gallery pictures for Olympus Stylus Tough TG-870 and Sony Alpha A7R IV. The whole galleries are available at Olympus TG-870 Gallery and Sony A7R IV Gallery.

If you're planning to carry your camera often, you'll have to factor in its weight and measurements. The Olympus TG-870 provides exterior measurements of 113mm x 64mm x 28mm (4.4" x 2.5" x 1.1") with a weight of 221 grams (0.49 lbs) whilst the Sony A7R IV has proportions of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") accompanied by a weight of 665 grams (1.47 lbs).

See the Olympus TG-870 versus Sony A7R IV in the latest Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you are working with at that moment. Following is the front view scale comparison of the TG-870 versus the A7R IV.

Factoring in size and weight, the portability rating of the TG-870 and A7R IV is 91 and 62 respectively.

Generally, it is tough to picture the gap in sensor sizing merely by researching specs. The graphic underneath might provide you a better sense of the sensor sizing in the TG-870 and A7R IV.

All in all, each of the cameras posses different resolutions and different sensor sizing. The TG-870 with its smaller sensor is going to make getting shallow depth of field more difficult and the Sony A7R IV will provide you with greater detail with its extra 45MP. Greater resolution can also enable you to crop photos somewhat more aggressively. The older TG-870 will be behind with regard to sensor technology.