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Question: Is this the Hoya HMC UV(0) or the Hoya HMC Super UV(0) 49mm filter made in Japan?  If it is not specifically one of these two, I do not want it.
Document: I have been on a quest to find the real hoya filter (I meant made in Philippines, since HMC UV(C) 52mm - Japan doesn't make then anymore), specifically the 52mm UV(C) filter since most of my lenses are 52mm. After going over good reviews, thought this might be the one, but I am still confused.Simple test for Multicoat filter: Put  the filter on a white sheet of paper on a table.
Early in Sept I searched on Amazon for "Hoya HMC UV 52 mm filter" and bought and received an excellent Hoya HMC 52mm UV(o) filter made in Japan. That one is great almost no reflection of light from a table lamp. Then I bought another new lens and needed another filter so I ordered again linking to the product on Amazon from my previous Amazon order so I would be sure to get the same great filter.
97% vs 99.7% gives you ten times more light reflected off the filter glass, and that's a lot. Please check out the image I attached to the product description. It shows reflection off this Hoya UV(C) HMC filter compared side-by-side to Hoya Pro1 UV(0) Super HMC filter (on right) and $5 Kenko filter (on left). As you can see the performance of this filter is not even close to the Super HMC.
Hoya HMC UV(0) has been replaced with Hoya UV(c), and you will get the (c) unless the seller has older production. The filter is also made in the Philippines. Apparently they have been outsourcing a number of filters. (See my review on the Cir-PL in this size). According to several forums, the (c) is slimmer, but other than that, it is unchanged from the (0).
I have both this filter and a Hoya Super HMC 52mm filter (which costs twice the price). I've swapped the filters between my Nikon 50mm f1.4d and 24mm f2.8 lenses and honestly have to say that I'm hard pressed to find any discernible difference between the two filters.
Using Hoya filters for years I didn't think twice choosing another one for my new lens. All Hoya filters I own are Super HMC (Hoya Multi-Coated) which according to Hoya website allows an average light transmission of 99.7%. This filter is HMC (not Super) and produces an average transmission of over 97%. Not that big of a difference, you might think.
This time I got a Hoya HMC 52mm UV(C) filter made in the Philippines instead. The "C" must stand for "Crap" as the filter is highly reflective compared to the UV(o). Also the original UV(o) filter package says it is Multicoated on the front and on the back, but this later UV(c) package says multicoated on the front but the back says "FULLY COATED" .
It only says HMC UV (0).Very high quality feel, heavy with a great milled edge and fits very snug sandwhiched between my 50mm 1.8d lens and the HMC Circular Polarizer that I got at the same time - in fact they are a little hard to unscrew once together.
I order Hoya HMC Haze UV Filter-52mm last month. The shipping was so fast. The Hoya Filter is so good. I use this filter for my Pentax K200D camera. I took a lot nice pictures use the cameral with this filter. I like this Hoya filter. I give this Hoya filter and their shipping service 5 stars.
When I bought this, the product images were of the Hoya regular UV filter and not the HMC filter (I uploaded the product package image just before writing this). So I was a little unsure of which filter I was going to get. After reassuring myself of the Amazon A to Z guarantee, I decided to finally buy this.My lens (Pentax 18-55mm DAL lens) already comes with anti-glare coating, but with this, it is even harder to get lens flare.
Answer: The one I bought was a 77mm and it was a "C". I'm pleased with the performance and if you Google around you can find test data where it scored quite nicely. http://www.lenstip.com/113.4-article-UV_filters_test_Description_of_the_results_and_summary.html