... , it is important, if the filter is used with an electronic device. All annoying, scattered light from other wavelength sources, ... long exposure time CCD photography: Good, when used with an additional IR-block-filter DSLR photography (original): Good, colour ... near perfect DSLR photography (MC modified): Good, when used with an additional IR-block-filter Webcam / Video (Planets): Unsuitable Webcam ...