Formatt-Hitech 95mm £180, $270
for 85mm fitting
One thing this filter shares in common with the B+W is that they’re both made of high-quality Schott optical glass. In other respects, they’re rather different. The Formatt-Hitech is designed to be used with square filter holders of varying sizes. The 95mm filter is compatible with the company’s 85mm filter holder, which is also compatible with the wide range of Cokin P-series filters.
In addition to the filter itself, you’ll need a filter holder ring at £16 ($25), and an 85mm modular filter holder at £28 ($45). Both are made of aluminium and have a high standard of build quality. An adaptor ring for fixing the entire assembly to your lens costs about £12 ($18). The complete price is therefore pretty steep, but excellent optical quality is a good match for the upmarket build.
The regular filter holder needs to be deconstructed and rebuilt to take the polariser assembly