I've been trying to find a Lee .9 Hard stop GND since November. Really, November of '09. Adorama, b&h, amazon were all out. I finally found one on amazon through a third party in the beginning ...
Are there any real downsides to using a UV filter? I know that a poor quality UV filter can effect image quality ... but, assuming I use a good quality UV filter, will that actually be an issue? Is ...