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散景

典型的圓形散景
(f/4.5;焦距50mm)
折反射式鏡頭造成的獨特甜甜圈狀散景
(f/5.6;焦距500mm)

散景(英語:Bokeh)亦称焦外,是一個攝影名詞,一般表示在景深較淺的攝影成像中,落在景深以外的畫面,會有逐漸產生鬆散模糊的效果。散景效果有可能因為攝影技巧或光圈孔形狀的不同,而產生各有差異的效果。例如鏡頭本身的光圈葉片數不同(所形成的光圈孔形狀不同),會讓圓形散景呈現不同的多角形變化。此外,反射式鏡頭焦外的散景,會呈現獨有的甜甜圈形狀。

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散景
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