Originally posted by DogLover Jeff, I assure you that the Hoya Pro1 protection filters will not affect IQ in the least. The only possible issue would be flare in certain situations. The newest crop of clear protection filters have rendered that old argument obsolete. The Marumi Super DHG also falls into this category. I even have a Hoya Pro1 on my Zeiss 100 (gasp!...the horror!).
I had bought protection filters (Hoya Pro1 Digital) a few years ago for some of my lenses that took 52mm filters (couldn't even tell you which ones now). The lenses are gone but I still have the filters (been meaning to list them). What *I* found was that in "some" situations the photos did display a lot of flare and it was spread across the exposure. The easiest solution was of course to remove the filter and put it back in the case.
Originally posted by DaniRo It's not the Pro1, it's the HD
I'm going to use it just in some situations (water, sand, salt, dust, crowded environments) - not all the time - I'm not a fan of filters either.
Sounds reasonable but I cannot help you because I have no experience with the HD filters.
Use them if you like, I choose not to. I was just asking why you'd want to. That's all.