For or against?
If "for", what do you use?
I've been using crappy ones for a long time, and I noticed one really good reason to step up to decent ones - the crappy ones affect autofocus in dim light. Not drastically, but when it really counts the reduced transmission (who knows how much...1/3 of a stop or more?) can make even my better lenses hunt.
Did some research, and ordered a couple Hoya HMC UV(0) off eBay. They are supposed to be tops for visible light transmission, UV reduction, and are decently coated.
If "for", what do you use?
I've been using crappy ones for a long time, and I noticed one really good reason to step up to decent ones - the crappy ones affect autofocus in dim light. Not drastically, but when it really counts the reduced transmission (who knows how much...1/3 of a stop or more?) can make even my better lenses hunt.
Did some research, and ordered a couple Hoya HMC UV(0) off eBay. They are supposed to be tops for visible light transmission, UV reduction, and are decently coated.