At 00:47 3/11/02, Damo wondered:
John,
I have had no previous experience with these filters but tis a great
question, the true B&W look is one to die for.
To the list: 'please let us know those that have either experienced this
or are going to try it out in the near future'.
Oh John........, please let me (and us) know what B&W film(s) you are
interested in trying this out on.
Agfa Scala 200X and possibly Kodak Tri-X.
Didn't want this to skew any responses if someone had tried one of these
with some other B/W film.
Also found a B+W 470 which uses Schott BG 18 glass. It's a cyan filter (BG
= blau-grun = blue-green). Found the Schott BG 18 spectral transmission
characteristics on Edmund Scientific's site. Looks like a "minus red"
filter much like a Wratten #44 or #44A. As I understand it, using a "minus
red" or something close to it blocks out light the very old orthochromatic
continuous-tone films didn't respond to (cyan is the negative of red).
-- John
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