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N a very slightly pink filter that absorbs ultraviolet light and reduces haze and excessive blueness 天光滤光镜 [photog]
If you have a high-end camera, the lens probably has screw threads, which means you can add a UV or Skylight filter (available at your neighborhood camera shop).
如果你有一架高档相机，那么它的镜头上可能有螺旋纹，这表明你能增加一个紫外或者天窗过滤器(附近的相机店里有售)。
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