@HowAboutRAW
http://www.haidaphoto.com/en/productsd.php?pid=18
And they’re well muticoated, also with lotus cleaning effect, for sure quite better
then hoya pro 1 digital uv filter series, easily, 8-layer multicoating, scatch proof.
Can be bought for a great price at ebay germany, or amazon germany, for example. Note that i am into no way affected with haida, i just checked them out 1-2 years ago and consider them quite good, for the price. Haida does exist since 1997, not as long as Hoya, but they deliver.
For instance here http://www.amazon.de/Slim-PRO-II-mehrschichtverg%C3%BCtet-Filterdurchmesser/dp/B00A1AOTY2/ref=sr_1_5?ie=UTF8&qid=1413190266&sr=8-5&keywords=haida+pro+ii+mc+uv

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.