There isn't any significant practical difference between them. I tend to go for UV myself as they are easier to find.
On that note, as a specific example, the Hoya 72mm UV( c) HMC filter (if I got the right size) is around £15 at amazon UK, and if you click through their ad that sometimes appears at the top of the forum I believe the site gets a little credit too. I don't know if anywhere else has it cheaper though.
While here, I dug out my own filter reflection coating test. It only covers some Hoya samples I have so is by no means complete.
![[Image: filterreflections.jpg]](http://i213.photobucket.com/albums/cc260/popotehrawr/misc/filterreflections.jpg)
Top left: UV(0) HMC
Top middle: UV HD
Top right: UV© HMC
Bottom middle: UV(N) HMC
Bottom right: UV uncoated
On that note, as a specific example, the Hoya 72mm UV( c) HMC filter (if I got the right size) is around £15 at amazon UK, and if you click through their ad that sometimes appears at the top of the forum I believe the site gets a little credit too. I don't know if anywhere else has it cheaper though.
While here, I dug out my own filter reflection coating test. It only covers some Hoya samples I have so is by no means complete.
Top left: UV(0) HMC
Top middle: UV HD
Top right: UV© HMC
Bottom middle: UV(N) HMC
Bottom right: UV uncoated
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.