I ordered this to add to my filter stack, as I didn't have a large ND1000 filter; I'm familiar with the K&F brand from other filters I've purchased as well as ones from Vine, and they've never failed to impress me with their quality. This one is their professional-grade one, so it might be a little more than an amateur needs, but I look at filters as a long-term investment since they can be used on any lens if you have the right step-up/step-down adaptors (though it IS best to stick to something close to your lenses' filter sizes to avoid reflections or vignetting).

The results I get with this filter are truly travel-mag worthy, perfect for tourism posters and large-scale art prints; waterfalls and streams flow beautifully, lakes appear like smooth satin even with some waves, clouds go perfectly streaky to give the sense of time passing, and it's possible to use a tripod and get photos of heavily-visited places during open hours without a lot of people in the finished shot. It's truly outstanding, even with my previous knowledge of the brand and the high expectations those experiences had generated!