Hi Pete,

I am not up on the current state of the art in filters and optics.
However, back when I bought most of my lenses Tiffen and Hoya were
comparable.
It was sort of like...

Do you want a Ford or a Chevrolet.  They both work, both are about the
same quality.  You may have one filter that is a higher quality in one
size from Tiffen, and another in a different size from Hoya.

I sort of inherited a large collection of filters from my father when
he passed on.  I kept a few, and gave most of them to a second hand
store.
Also gave the darkroom equipment to the second hand store (a church
charity store.)  This was after setting up a darkroom in the house and
having a fairly long dicussion with my wife about the chemical smell in
the house.

Figured the darkroom needed to go...  this was a while ago, but the
darkroom, and the FD mount canon cameras, and a couple of FD mount
lenes... went to the second hand store.

I did keep the museum pieces - the Crown Grapics and the Argus.  Not
really sure what to do with them.  Actually, they both work.  I also
have film for both of them.  I also have a Kiev 88.  If someone wants
to learn about photography, I tell them they should start with one of
these...  they say I am nuts.  I tell them if they really want to learn
they should learn to use a light meter, and learn how to use a manual
camera.  They can then apply it to an auto camera after that.  If you
learn the mechanics, and how to take your time to frame the subject
with an all manual camera - it makes using the fancy digital cameras a
whole lot easier.  They all think I am nuts.

Anyway, I got off topic from your subject.  The Tiffen and the Hoya are
fairly interchangable.  Hoya calls their UV filter UV and I believe
Tiffen calls their UV filter a Haze filter.  Quality is about the same.
It may very from time to time depending on the lot, and the quality
control process in the glass plants.  It also may very depending on the
size of the filter.
Use it and see if you like it, if you don't - get a Hoya filter, they
are around $20.

roland

I won't put Tiffen on any lens I own.  Years ago I was assessing the
affect of linear vs. circular polarizers.  I had a Tiffen linear, and
as I rotated it in front of my eye, I could easily see the distortion
caused by the fact that the two surfaces of the filter were NOT
PARALLEL, effectively making it a prism!

Hoya makes a number of filter lines, from really cheap to really great.
Look for SMC on the box or the Pro series or the super thin series.

Avoid any uncoated filter from anyone!

Thanks everyone, appreciate the input.