Hoya B50 ND 2X filter for Hasselblad new in box Nikon

Go to bottom of auction for important data sheet!                                        Is it not a confidence builder to buy from someone who intimately knows what he is selling*?*

 This is a  filter for any type of film.  Hoya filters are mass dyed not laminates which are two pieces of glass sandwiching a tasty plastic film. The glass comes from Hoya's own glass works. This is ND 2X . 

All polarisers are laminates  sandwiching Polaroid Corp film. Polaroid is the exclusive supplier of this film which comes in 4 degrees of purity. I sure many of you did not know that!

I think that many of you did know that only a small % of filters are not laminates excluding UV and close ups, cross screens etc. Only Nikon, Hoya and 100% of German optical anything mass dye their glass. So now you know why us idiots spend 3.4.5. times as much for our filters.

God forbid the current market is being totally flooded with two,   three and $5 dollar filters from China made with glass from recycled auto windshields. There are 10's of thousands posted on eBay. Who would buy this junk*?* They all claim coated. Yea with transparent florescent paint.

Even the Chinese counterfeiter couldn't put two pieces of optical glass around a film and coat it for less then $6 or $7. They can counterfeit milk and kill their babies, counterfeited pet foods that killed 10'000's of our cherished pets but a $5 new coated  filter parallel to the front element of the lens and its threads simply does not exist.  

A quick aside. Hoya the only glass manufacturer in Japan besides Nikon and Sigma does NOT MASS DYE all of it's filters. Hoya was the first optical glass maker in Japan. They sold lenses marked Hoya which are collectibles today. Now they make lenses for everyone else but Nikon.  The ND 2X is mass dyed.  The way to tell mass dyed from laminate with current packaging for Hoya is mass dyed has BLUE boxes and laminates GREEN. Don't be fooled by the eBay hucksters. Also the two surfaces of the glass blanks must be precision grinded so they are parallel, they must be inserted into the mount to be parallel to the front element of the lens and lastly the threads have to be cut to precise standards not to go off center when mounted. You want filters with plastic moulded rims, Aluminum that wears on hardened steel?? Glass that is recycled? Make those guys who list 20, 30 ,40 at a time for  3, 4 and 5 $$ rich.