Fake B W filters how to tell them from the real deal.

STOP PRESS:We have been informed that the facitilty producing fake / replica filters has been closed. At the request of the large Asian sellers of genuine product who claim business has been affected by this guide we have therefore removed it in good faith.I intend to reinstall a modified version of it asap.Still as always buyer beware and vigilant!Purchase from your local distributor and get a minimum of 5 year warranty or with Mainline Photo Australia get an EXTENDED Lifetime damage warranty as well!Thanks for readingMainlinephoto.