Breakthrough Filters is a cinema and photography equipment design and manufacturing company from San Francisco, California specializing in 4x5, 6x6 and Drop-In Filters.
San Francisco, California, September 7, 2021 – Breakthrough Filters today announced
an all-new drop-in filter system for PL and B4 lenses, called “Cinema DFM”, short for
“Cinema Drop-In Filter Mount”.
