Multi-coat , why?

[song]

what is the difference between a multi-coated UV filter and a normal (single coat) UV filter?


How much should i expect to pay for a 37mm UV hoya multi-coated filter?


How much should i expect for a 37mm UV hoya single coat(normal) filter?

 

[syncmaster]

One UV lens with out coat , is just a commom piece of glass .
So the single coat , have on it only the filter .
Multy coat = filter + second filter or , + anti scratch coating .

 

[Wai]

pls read http://www.thkphoto.com/catalog/hoya.html

 

[mpenza]

think it reduces reflection and allows more light to pass through.