I would always prefer a multicoated filter, but I use the Tiffen 812 all the time with no apparent ill effects. I do use a hood. Tiffen doesn't make a multicoated version of the 812.
Gregory L. Hansen wrote:
How important is it to have a coatings on all your filters? A plain UV
filter might cost $10 while an SMC filter would cost $35. I can't see how
it would matter much on the outer surface, a little bit of light would
just be lost. But on the inner surface?
--
"A nice adaptation of conditions will make almost any hypothesis agree
with the phenomena. This will please the imagination but does not advance
our knowledge." -- J. Black, 1803.
