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b w NL1 Close Up 1 49mm



The B W Filter Company has been manufacturing optical filters for over 50 years. Their filters use S
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b w NL1 Close Up 1 49mm
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 unif