Filter for me is just a gimmick thing to play with. If possible I would love to take photo without filter. Just simply..... no filter has much better color saturation compare with filter. ( Just like Nikon with no AA filter ). But then getting filter for my purpose is just to protect lens. For such a clumsy person like me. I might accidentally hit the lense. So i would say for me it is acted as a protection. Just my own preference though.