New smartphones are only getting incremental updates over their predecessors these days, and that's the case with the Galaxy S8 and Galaxy S9.
And the features and power that makes the Galaxy S8 one of the best phones of 2017 go a long way.
Part of the reason Samsung added this feature is because the new camera with an incredible wide f/1.5 aperture is very well suited for low-light environments, but perhaps not so much for brighter situations.
Having such a wide aperture on a sunny day could let too much light through the lens and potentially cause overly bright photos.
You'll be fine with the f/1.7 camera in your Galaxy S8, which offers a good balance for low light and bright environments.
But it only records 960 fps slow motion video up to 720p resolution, which isn't very sharp at all when smartphone screen are four times as sharp.