Heliopan UV SH-PMC Multicoated FilterHeliopan UV SH PMC Multigrade Black and White Filter Made in : Germany Diameter : 27mm 77mm A UV blocking filter, also known as a haze filter, is an excellent universal filter for visible improvement of exposures with all film types. It is also suitable to protect the lens from external influences and can remain attached permanently. During exposure, this filter absorbs the disruptive share of scattered light, so that a refined motif is possible