The Formatt 5 x 5" Soft Effects 1 Clear filter produces sharp, predictable and reproducible distortion effects for HD (High Definition) and is manufactured using a revolutionary process that essentially creates optical distortion across the entire filter surface. This sharp distortion is the result of optical lenses strategically placed in the filter surface, creating a uniform softening of the subject that is very pleasing to the eye. All Formatt filters are manufactured with Schott extra-white optical glass, precisely polished and ground to ensure absolute optical flatness and optimal performance. The flatness of each filter is guaranteed to a maximum value of 2 waves and is accompanied by an individual measurement performed by a laser interferometer. Note! Formatt Soft Effects Clear filters are available in intensities from 1/8 to 3, with 3 having the greatest effect. - Specially designed for High Definition filming, Soft Effects filters will prove to be a useful tool for serious amateur and professional videographers. - The secret to Formatt's consistency in filter design lies in its unique "Absorbing Cell Technology" (A.C.T.); this unique process enables the application of chromatically correct dyes to ultra-fine, optically pure absorbing cells, providing control that guarantees the smoothest gradient lines and consistent colour across the entire filter surface. - This A.C.T. process is revolutionary compared to conventional filter dyeing techniques, as it eliminates the need to coat the glass surface directly; the reproducible performance achieved through A.C.T. ensures that at any time, you can confidently interchange identical filters during filming without perceptible differences in colour or density. - All Formatt filters are finished with a unique frame around the edges, offering maximum protection against chipping, surface scratches and enabling easy handling and cleaning. - With the filter description on top of the frame, filter identification is also much easier, particularly when filters are stored in cases on location.