This filter is used for photography with infrared films. Infrared film is also sensitive to ultraviolet rays and the shorter wavelengths of the visible spectrum so it is necessary to filter out all but the infrared rays. Hoya makes two types of infrared filters: R72 passes only infrared rays above 720nm; RM90 passes only that above 900nm.
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Comments about Hoya 49mm RM72 Infrared Glass Filter:
This is the filter that will give the same gee-whiz results that we love in amazing infrared photos. Construction is solid aluminum and glass. Start here to get pleasing results the first time without much fuss and without the much greater expense of competing brands.
Comments about Hoya 49mm RM72 Infrared Glass Filter:
Very good filter for IR photo shooting. No hot spots, good edge to edge consistency! Can't beat the price either!
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