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B W 81B (Warm Up) 39mm



The B W Filter Company has been manufacturing optical filters for over 50 years. Their filters use S
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B   W 81B (Warm Up) 39mm
The B W Filter Company has been manufacturing optical filters for over 50 years. Their filters use Schott optical glass from which the filters are diamond cut, precision ground and then polished to ensure flatness on both surfaces and uniform thickness throughout. These, among other innovative measures, allow them to offer filters that meet the needs of even the most discriminating users.B W 81BThe 81B makes possible a stronger color temperature

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