IR фотофильтры

1000nm is suitable for low latitudes and strong light use;
950nm is suitable for outdoor and strong light use;
850nm is suitable for outdoor and strong light use;
760nm is suitable for indoor and weak light use;
720nm is suitable for indoor and weak light use;
680nm is suitable for dawn or faint light use;


ну и ессно нельзя пройти мимо:
This filter can also be used to achieve an "X-Ray" effect. Briefly, the X-Ray effect was discovered in 1997 when Sony sold Nightshot (NigteShot) 0 Lux Handicams. Users found that if an infrared filter was added to the camera and the camera was operated in daylight, the camera could sometimes view through clothing. These filters are also sometimes called an Infrared Pass Filter, See Through Filter, X-Ray Filter or See Through Clothing Filter. This effect is most noticeable on dark synthetic fabrics.