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什么是双反相机
更新时间: 2020-10-31 00:00:00  

双反相机是包含两套联动调焦的焦距相同的镜头,上方镜头通常无法调节光圈,只做取景之用;下方镜头则带有光圈快门调节装置,用于实际的曝光。双反系统结构简单耐用,曾广泛为记者及大众所接受。但因其固有的视差和镜头的限制,现已较少生产及使用。双反相机的全称为双镜头反光镜取景照相机,与单反相机同属反光取景式相机。

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