A photographicfilter made of colored glass that modifies the light incident on a film by selectively absorbing colors. It is used when taking photographs through haze.
有色玻璃镜片，能够有选择地吸收某些色来修正胶片对光的感应效果。用于在烟雾中摄影。
2
The latent pigment is a kind of new material which is used as colorant, information material, photographic material and light filter.
隐颜料是用于着色以及信息记录、照相显影、滤光器等领域的新材料。
3
Digital camera to use commonly CCD photographic, sunshine for it is not CCD wavelength is accepted, so the use ultraviolet filter is not obvious.