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Wratten 44A Filter
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14th January 2009, 12:29 AM
Argentum
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Join Date: Sep 2008
Location: Sceptred Isle
Posts: 3,066
I tracked down a spectral chart for the 44A (it's upside down compared to most charts)
As Lee suggests, you would need a very strong CC Cyan filter as it looks like the 44A had complete cutoff of part of the red section of the spectrum.
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