线聚焦聚焦对焦点对光成像清晰点无焦点不聚焦镜头的焦点焦距使聚焦软聚焦
Line focus focus to focus focus to light imaging sharp point No focus No focus The focal length of the lens makes the focus soft
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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