The UV filter doesn't have the kind of coating which adequately reduces flare and other problems, so after running some tests image quality decresed ever so slightly; I won't use it unless the circumstances are harsh enough to demand it. The circular polarizer works well, but has a hard to see horizon indicator which could have been more visible. In the end, they're worth their price and useful.Get more detail about Zeikos ZE-FLK58 58mm Multi-Coated 3 Piece Filter Kit (UV-CPL-FLD).