Olympus SP-820UZ vs Sony A7S III

Its time to take a deeper look at the Olympus SP-820UZ and Sony A7S III, former is a Small Sensor Superzoom while the latter is a Pro Mirrorless by manufacturers Olympus and Sony. The image resolution of the SP-820UZ (14MP) and the A7S III (12MP) is relatively comparable but the SP-820UZ (1/2.3") and A7S III (Full frame) enjoy totally different sensor dimensions.

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The SP-820UZ was unveiled 9 years earlier than the A7S III which is a fairly large difference as far as camera tech is concerned. Both the cameras come with different body type with the Olympus SP-820UZ being a Compact camera and the Sony A7S III being a SLR-style mirrorless camera.

Before we go straight into a full comparison, below is a quick summary of how the SP-820UZ grades against the A7S III with respect to portability, imaging, features and an overall score.

Here is a preview of the gallery photos for Olympus Stylus SP-820UZ & Sony Alpha A7S III. The full galleries are provided at Olympus SP-820UZ Gallery & Sony A7S III Gallery.

If you're looking to carry around your camera, you have to factor in its weight and proportions. The Olympus SP-820UZ offers external measurements of 117mm x 78mm x 93mm (4.6" x 3.1" x 3.7") and a weight of 485 grams (1.07 lbs) while the Sony A7S III has measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).

Compare the Olympus SP-820UZ and Sony A7S III in our brand new Camera plus Lens Size Comparison Tool.

Take into account, the weight of an ILC will change based on the lens you are utilising during that time. Here is the front view scale comparison of the SP-820UZ against the A7S III.

Looking at size and weight, the portability grade of the SP-820UZ and A7S III is 69 and 61 respectively.

Often, it can be difficult to visualise the contrast in sensor sizes purely by going through specs. The picture below will provide you a stronger sense of the sensor sizing in the SP-820UZ and A7S III.

All in all, the two cameras posses different resolutions and different sensor sizes. The SP-820UZ using its smaller sensor will make achieving shallow DOF trickier and the Olympus SP-820UZ will produce extra detail having an extra 2MP. Higher resolution will also allow you to crop photographs somewhat more aggressively. The more aged SP-820UZ will be behind with regard to sensor technology.