For technical & artistic photography Suitable for lenseszoom lenses with a filter thread For digitalanalogue photo system & video cameras Front thread for an additional filter a lens cap or a lens hood Also for infrared colour films HTMC coating four layers on each side for very good spectral transparency Quality standard (glass) high-quality lens glass Impact on the pictures For high contrast black & white photos long distance air & special effect shots Blue gets nearly black Red & leaf green gets very bright nearly white Note for Consumers Can be used as an infrared filter for digital cameras only without an infrared absorber with an infrared absorber also usable for black & white photos Infrared photos as well as black & white photos are always possible with analogue cameras