Hoya 55mm RM-72 Infrared Filter

Used for photography with infrared films Also sensitive to ultraviolet rays and the shorter wavelengths of the visible spectrum Is necessary to filter out all but the infrared rays R72 passes only infrared rays above 720nm Often used in crime detection, medical photography, detection of distribution of vegetation, etc. Product DescriptionUsed for photography with infrared [...] http://wbst.us/mj1kfD