So I have the Canon 17-40L coming as you may or may not know from my other threads, and I'm looking for a circular polarizer. So..... Hoya multicoated polarizers. They cost waaaaaaaaay more than the standard circular polarizer. I sprung for the multicoated UV filter, but the polarizers are so much more expensive, I'm wondering, are they really worth it? From what I understand they're supposed to prevent ghosting and flare, which would be totally worth it considering it's a wide angle lens and prone to it, if it actually worked. So does it work? On a side note, can one still get to the polarizer while the lens hood is on the 17-40?