I have a couple questions about filters that are kind of random and probably only come from experience. I need to purchase a UV filter, a Polarizer and possibly an 81a warming filter. First question: I'm looking at the B+W filters, and they have normal old UV 010 Filters for about $50 and then they have the bells and whistles, multi-coated crazy version for $112. I noticed that some of them say 'Haze', but I wasn't aware that they actually did anything like that. What exactly is the difference between the $50 B+W and the $112 B+W? Second question: I read an article a couple months back about fine-tuning white balance and the author mentioned that he always kept an 81a warming filter on every lens he used and it gave him more accurate color rendition. The article is here: http://www.nikondigital.org/articles/white_balance.htm It basically just says to use one all the time, but he is using a d1x and I think most modern nikons have a little better color rendition. Anyways, is this suggested at all? Or will newer cameras correct for the filter? Thanks in advance for any answers, I tried to research this stuff but I think most of it comes from experience.