I know the breakthrough filters, especially their ND filters are very well received. What about the UV and CPLs? In particular Im interested in how they hold up against the Zeiss ones
very well. I have gone over pretty much completely to BT over a year ago. the CPL is outstanding. the UV just plain do the job. Schott B270 optical plate glass. the frames are the best design I've seen making on/off easy. excellent multicoating. 8 per side. hydrophobic. all X4