三个滤镜覆盖了电磁光谱的紫外、蓝和红部分的波长。
The filters cover various wavelengths over the ultraviolet, blueand red portions of the electromagnetic spectrum.
数码相机一般使用CCD来感光，阳光波长对于CCD来说是不会被接受的，所以紫外线滤镜的用处已经很不明显了。
Digital camera to use commonly CCD photographic, sunshine for it is not CCD wavelength is accepted, so the use ultraviolet filter is not obvious.
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