A UV filter may help the look of some outdoor photos in bright sun, but honestly I can't see much difference. I use UV filters like most people do, as a way to protect the front element of my lenses. If you're shooting someplace where the lens could get stuff on it, like in the rain, at the beach (salt spray), or the pool (splashes), at a party where people might be getting sloppy with drinks or around kids/pets who might reach out and touch the lens, a UV filter is good protection. It's much easier to clean a filter than the element on an expensive lens!

Of course for this purpose you want a filter that won't degrade the quality of your images, so far as I can tell this one does not. I haven't noticed any visible darkening or color shifts, in fact when I first opened the box for a second I thought there wasn't any glass in the filter ring! So overall I think this will offer some protection to your lenses without changing picture quality. And of course, if you're someplace that isn't hazardous to your lens you can easily take the filter off.

While it's not a downside, I do kind of wish K&F would standardize their filter cases. I have received 3 different kinds already, and it would be nice if they had a stamp/sticker on the outside so you can quickly tell which type of filter is in the box! Luckily, I have a label maker.