On 8/1/2014 4:24 PM, Wayne Harridge wrote:
Probably not an 80A:
http://www.hoyafilter.com/hoya/products/coloredfilters/80a/ ,
more likely 81A:
http://www.hoyafilter.com/hoya/products/coloredfilters/81a/
Brain fart. Wayne says what I meant. 81A and the stronger 81C are the filters
for high altitudes.
Apologetic Moose
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What if the Hokey Pokey *IS* what it's all about?
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