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Re: [OM] UV or not UV, that is the question

Subject: Re: [OM] UV or not UV, that is the question
From: Moose <olymoose@xxxxxxxxx>
Date: Tue, 25 Jul 2017 23:26:35 -0700
On 7/16/2017 1:48 PM, Mike Gordon via olympus wrote:
Kaleidoscopic Moose writes:

<<What MF lenses are you bringing? I have a B+W 55 mm and Vivitar 62 mm 81C filters. 
I also have a B+W 49 mm KR1.5, which is, depending on where you look, similar to an 81A or 
81B. Also, a 72 mm B+W 010 filter, which has <<a much sharper cut-off than the 
others, although not starting until about 400 nm.


Yikes, better decide soon.  I think the 35 shift  (49mm front filter)  Z. 50 
1.4, CV 90/3.5 (49mm filter), CV 180/4 (49mm), Z 24mm/2.8, Z 21 f2.  Otherwise 
not clear yet.

Were I in your situation I would buy a 29 mm 2A filter. It has the best curve and one would cover five of the above lenses. You could borrow a B+W 55 mm K3 from Moose for the 21/2.

- Wratten 2A in Series VII size and a series VII=> 49 mm filter holder. The 
filters are available cheap used on the 'Bay

- The Tiffen Haze 2A is inexpensive. One might assume from the name and description, "Absorbs virtually all UV light" that is is at lest close to the Wratten 2A.

-  The B+W 2A ish filter #420 is discontinued, and not common.

Les U. V. Moose

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