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Mark, mind telling us where online you
ordered the SMC filters?
....I decided to follow Shel's lead and
got online and ordered SMC filters.
Ken Waller
----- Original Message -----
Sent: Sunday, May 20, 2001 2:50 PM
Subject: Re: Filter Blab
A couple of weeks ago I was walking through the
yard with my standard insect setup (Pz-1p, A* 200mm macro, flash). I always
keep a skylight on this setup since I'm poking the lens around in bushes and
brambles etc. To my surprise I saw a bight white circle on the fence
besides me. A little checking showed that this was the reflection off
the Hoya skylight. I removed the filter - no reflection off the lens
itself. At that time I decided to follow Shel's lead and got online and
ordered SMC filters. I have them now - NO reflections...
The SMC
filters say SMC on them. I have a Pentax 49mm skylight that does not say SMC,
and compared to an SMC there is a world of difference. Based on the
reflectivity of the non-SMC Pentax and the Hoya, I wonder if they are even
single coated.
Personally, I tend to avoid filters unless there is a
compelling reason to use them. One thing that really surprised me
though was the graph that came with the SMC skylight. I always thought that a
skylight was a UV filter that extended some filtration into the blue end of
the visible spectrum. Actually, according to the documentation the
skylight blocks some UV, but not nearly as much as the UV filter, and then
blocks 10 to 18% of the whole spectrum, with the most blockage at the
blue-green and green band of the spectrum. I may shift to a UV filter
for use in telephotos...
- MCC
At 03:55 PM 5/19/01 -0700,
you wrote:
Hi,
There was a discussion a while
back about Pentax filters, on how to tell if
they are
SMC or not.
I
won a 77mm UV SMC off ebay a while back, and it is definitely SMC by
the
wonderful colors. Comparing it to the non SMC it`s like night
and day.
While on filters, the B+W
polarizer I have is about twice as
massive as all the other (cheap)
polarizers I have.
Steve
Larson
Redondo Beach, California
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Mark Cassino
Kalamazoo, MI
[EMAIL PROTECTED]
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