Hoya HMC UV(0) vs UV(C) vs UV(N)

[SpyGlass]

i know there are threads on filters and how much they cost.

this is not about the usefulness of filters but about the models available.

there are UV protectors and those listed above

The most common is the UV(0) i believe

what about the rest? just clever marketing or really have different properties?

So what is the difference? why UV protector when there are UV filters?

Anyone can enlighten? because the website is no help really

 

[daredevil123]

i know there are threads on filters and how much they cost.

this is not about the usefulness of filters but about the models available.

there are UV protectors and those listed above

The most common is the UV(0) i believe

what about the rest? just clever marketing or really have different properties?

So what is the difference? why UV protector when there are UV filters?

Anyone can enlighten? because the website is no help really

A technical service rep from the US Hoya distributor gave this answer: "In the HMC line, the UV(C) is the replacement for the UV(0). The main difference is that the UV(C) is a slim filter."
http://forums.dpreview.com/forums/read.asp?forum=1018&message=35375304

I read this on Steve's digicam forums:
UV(0) filters are basic UV filters. UV Filters are also available in UV(A), UV(B) and UV(C). UV-A is the closest to visible light, and since filters aren't perfect, a UV(A) filter will also block some visible violet light as well as UV-A light. A UV(B) filter will block less violet light, and a UV(C) filter will block UV-C light but no violet light; it will, however, pass some UV-A and UV-B light as well.
I also read on another website from someone who wrote to Hoya asking about UV(N) filters. The response was that that the UV(N) filters were made for the Asian market and was not made from optical glass.
http://photo.net/filters-bags-tripods-accessories-forum/00V7IN

Google is your friend.