The colors are more vivid/saturated, and show more detail and sharpness, except in low light situations, where the GoPro seems to have an advantage due to its greater dynamic range

DYNAMIC RANGEThe dynamic range is better on the GoPro, including better shadow detail

the GoPro has better dynamic range, and its color accuracy is better on greens (grass, leaves, trees, etc.), the overall white balance and color accuracy was much better (IMHO) with the Sony.

There is no View Finder, but with an Android or iPhone version of Sony's PlayMemories Mobile [PMM] app installed on your smartphone or tablet, you can use the latter device(s) as some sort of a view finder as well as to remotely control the action cam, including changing camera modes and settings (you can also purchase the more expensive product bundle that includes Sony's Live View Remote, or purchase just the latter separately; but since I don't have the Live View Remote, I can't comment on it further except to say that I don't have a need for it currently, because I'm able to do everything I want to do just using my Android and the PMM app.)The