Good morning fellow Cser, would like to ask any recommendation filters for UWA lens, canon efs 10-22mm. I know beside those square filters eg: Lee, hitech I would get in the near future, now prepare for cny kinda poor lol. I read from filters guide that CPL is a big no no for uwa. So for the moment I would like to have something that can make the grass looks greener, sky look blue, something like a Circular polarizer since its not recommend for uwa, any decent screw in type to recommend me? I wanna take landscape of mountains with lots of green green tree, haha. Pardon if my question sound silly:bsmilie: Your input will be greatly appreciated!