Ish. Not too great with reviews but I'll give it a shot. First off, it's expensive. I'm assuming mostly because of the weight of the brand name and the price of French labor, plus all the fancy packaging. I think it cost me right around $40. Second, it's TINY! Super thin. Picked it up for my PL 25 because I wanted quality glass to go in front of my quality glass. 3.3mm, the comparison shot is next to a US nickle. But anyway, who cares about all that. Performance! It's super thin but still manages to have threads on the outside to attach a lens cap or stack more filters, which is great. Granted it's so thin that the factory lens cap for my PL25 barely stays on but it manages. Thankfully if it falls off and I lose it, I still have the UV filter to protect the glass. However, the glare and flare reduction is pretty poor. My Sigma MC UV filter blows it out of the water, especially for 1/3rd the price. Cokin ___________________________________________ Sigma ___________________________________________ No filter ___________________________________________ It actually seems to out perform not having a filter on at all (which is weird because on the LCD the non-filtered picture has zero green reflection and the Sigma has a faint glow in the same spot). I can't get the Sigma reflection to show up so maybe that filter is really that amazing. And no, I'm sure I didn't switch them out, I shot them in that order. So there you have it. If you want a nice multi-coated UV filter, buy a Sigma.