[rollei_list] Re: Filter identification question

  • From: "John Wild" <JWild@xxxxxxxxxxxxxxxxxxxxxx>
  • To: <rollei_list@xxxxxxxxxxxxx>
  • Date: Thu, 22 Jun 2006 14:16:12 +0100

Jerry,

If it was an Infra Red filter it would be almost black (very dark red)so
as to only pass infra red light. The inscription would have been
"Infrarot" . I suspect it is a Rollei warm-up (colour conversion for
colour film) filter "R1" also available in strengths R1.5, R2, R5, R11.
These had a female bayonet fitting on the front so that an additional
filter could be attached as required. Similar filters in Blue were
available and as a cased set.

John

-----Original Message-----
From: rollei_list-bounce@xxxxxxxxxxxxx
[mailto:rollei_list-bounce@xxxxxxxxxxxxx] On Behalf Of Jerry Friedman
Sent: 22 June 2006 13:31
To: rollei_list@xxxxxxxxxxxxx
Subject: [rollei_list] Re: Filter identification question

 
Hi!

I hope someone can help me identify a Rollei Bay III filter that I have
with the letters I R on it. It is clear and has bay III fittings on both
sides (male on onme end, female on the other).  Should I assume this is
an infra-red filter?  How is it used and what effect would it have being
used with black and white film?

Many thanks, Jerry F.  


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