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散景

典型的圆形散景
(f/4.5;焦距50mm)
折反射式镜头造成的独特甜甜圈状散景
(f/5.6;焦距500mm)

散景(英语:Bokeh)亦称焦外,是一个摄影名词,一般表示在景深较浅的摄影成像中,落在景深以外的画面,会有逐渐产生松散模糊的效果。散景效果有可能因为摄影技巧或光圈孔形状的不同,而产生各有差异的效果。例如镜头本身的光圈叶片数不同(所形成的光圈孔形状不同),会让圆形散景呈现不同的多角形变化。此外,反射式镜头焦外的散景,会呈现独有的甜甜圈形状。

参见

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散景
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