Originally posted by awesomeasianman I'm new and I herd that using a polarizer filter is much better than using a UV filter. I hope some veteran could explain what a circular polarizing filter actually do.
I'm fairly new to this stuff too, but I'll take a stab here. A circular polarizer is more useful in photography than a UV filter because it does have a noticeable effect, it's not a placebo. What a CPL will do is cut down on reflections from non-metallic objects, giving better colour saturation, less haziness to skies, and reducing the glare or reflection on windows.
If you want more information than that on *how* the filters work, there's a relevant
wiki article that is enough to make me cringe.
It's definitely worth having one, or a couple if you have lenses of different thread diameters.
I mentioned this link in another thread awhile back, but
this is the kind of ghosting you risk with unnecessary filters on your lens. If one does use UV filters, take them off around bright lights.