Can't find Hoya HMC Japan UV(O) filters?
I was going to buy a HMC UV(O) Japan filter in 72mm for the sigma 18-35mm 1.8, but can't find them in stock. I see alot of these UV(C) ones that are made in the phillipines instead. Were these all made as replacements? There's also a "skylight" HCM UVO, but I don't know what that is. Seems like it removes blue from the pictures.
There are other colored ones, ND filters, and polarizers, but no plain clear ones made in japan that I can find. What's the deal with that?