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关注：1
2013-05-23 12:21
求翻译：Many normal perspective lenses for today\'s digital SLRs are retrofocus, because their smaller-than-35mm-film-frame image sensors require much shorter focal lengths to maintain equivalent fields of view, but the continued use of 35mm SLR lens mounts require long back-focus distances.是什么意思？ 待解决
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Many normal perspective lenses for today\'s digital SLRs are retrofocus, because their smaller-than-35mm-film-frame image sensors require much shorter focal lengths to maintain equivalent fields of view, but the continued use of 35mm SLR lens mounts require long back-focus distances.
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2013-05-23 12:21:38
正在翻译，请等待...
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2013-05-23 12:23:18
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2013-05-23 12:24:58
许多正常透视透镜为今天\ ‘s数字式SLRs是retrofocus，因为他们的小比35mm影片框架图象传感器要求更短的焦距维护等效视野，但对35mm SLR透镜登上的持续的用途要求长的焦点距离。
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2013-05-23 12:26:38
Today\ 的数码单反相机很多正常的视角镜头是 retrofocus，因为他们小-比-35 毫米的电影-帧图像传感器需要更短的焦距保持等效字段的视图，但继续的使用 35 毫米单反镜头坐骑需要长时间背对焦距离。
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2013-05-23 12:28:18
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