Excerpt: I use this filter on all my lenses to protect their glass and to minimize sun flare. The multi-coat really helps with flare and reflections in my experience. Also, I've never had problems with these filters getting stuck on the lens, but FYI I heard that running a pencil point on the threads before application can lubricate them to prevent this from happening as well.
Excerpt: tested the canon 70-200 f4 is lens with and without this filter on a tripod and all of the usual precautions to elimitnate vibrations. after enlarging both images and processing both exactly alike with cs5 i could find absolutely no change in image quality except for a slight color shift which is not a problem to correct for in any event. all you pixle counters out there check it out for youselves!
Excerpt: The Hoya Super HMC is a high quality multicoated filter for protection. Some will disagree in using filters and go by the hood only, I have a toddler and every protection I can use helps some.
Pros: Easy To Use, Good Image Quality, Reasonably Priced