The Signal-to-Noise is improved by developing soft filter.
采用软件滤波技术，提高了信噪比；
When you click OK, the filter applies the effect, darkening the surrounding area and creating the soft spotlight effect you see here.
点击确定后，滤镜效果就会生效，将周围环境暗色化，并制造出一个柔化聚光灯的效果。
Final retouching only consists of colour adaptions, contrast adaptions plus a very slight soft focus filter.
最后的润饰只包含颜色调整、对比调整，还有稍微的软化集滤器。
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