I stopped using filters for protection around the same time. A halfway decent filter turns a great lens into a halfway decent lens.
Paul via phone > On Nov 2, 2013, at 9:09 AM, Godfrey DiGiorgi <[email protected]> wrote: > > Tiffen filters are often ok glass-wise, but often have cheap, aluminum mounts > with sharply cut threads that can damage plastic and soft metal lens mounting > threads if not handled carefully. They are also prone to getting jammed and > being difficult to remove. > > Haze vs UV vs UV Haze for protecting a lens on a digital camera makes no > difference whatever. All three are designed to filter out UV light scatter, > which digital sensors are not particularly sensitive to. > > The biggest things to watch out for with filters is added flare and focusing > issues. Some are improperly made and have some curvature or a wedge shape to > their surfaces. Those can degrade image sharpness and cause AF issues. Even > multicoated filters will add some flare potential and should always be used > with a good lens hood. > > I saw flare problems and stopped using protection filters as a general rule > in the early 1980s. But I do still use one from time to time depending on > circumstances. Most of the time I just leave my lens unprotected except for a > lens hood. I await the Mongol Horde of filter extremists and their flaming > swords ... Perhaps I'll offer them tea. > > Godfrey > > >> On Nov 2, 2013, at 4:00 AM, Eric Weir <[email protected]> wrote: >> >> Midway in my walk back in September I replaced the lens cap on the A 28/2.8 >> with a uv filter. Recently I thought I ordered 49 and 67 mm uv filters >> [Tiffen] for use as lens protectors on two other lenses. When the order >> arrived I had two 67 mm flyers, one uv, one uv haze. >> >> My first thought was to return the haze, but reading up a little I thought >> maybe I’d keep it. In a discussion of uv vs. uv haze on photo.net, however, >> I encountered a diversity of opinions about filter vs. no filter and uv vs. >> haze, and strongly negative opinions about Tiffen. >> >> I’d be interested in this group’s thoughts. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
