I just ordered my first L lens (17-40mm f/4L) and am fairly new to photography. I want to slap a UV filter on it before I even use it, but I am not sure what to get. Any suggestions? I found a Canon 77mm UV coated filter on Amazon for $30 and a Hoya UV multi-coated for the same price. I am assuming multi-coated is better, but I don't really know what that means or does. Any advice would be much appreciated.
If you really must use a filter, stay away from the Canon brand and get the Hoya. I chucked my filters after I noticed ghosting in my images and in some cases, increased CA.
I tear at my hair everytime i have to clean my Hoya SMC UV filters. It was such a pain to clean them. Switched over to B + W UV MRC filters and never looked back.
B+W or Heliopan are the only two I would even consider (thin profile for this lens). They cost more but when you consider the cost of the lens ($600+) don't go the cheap route on the filter if you are going to use one.
