佳能28-70/2.8与28-60/4镜头专利曝光

新浪科技综合2021-11-22

本文来自色影无忌近日佳能一项镜头变焦至长焦端时会变短的专利曝光。变焦镜头通常情况是相反的。 asobinet.com发现了一项佳能专利申请。镜头为 f2.8/或f4 标准变焦镜头，但canonwatch认为它永远不会投入生产。该专利要解决的问题：提供一种具有大光圈、小尺寸且具有高光学性能的变焦镜头。近年来，随着摄像设备的功能化，要求小型且轻量，还要大光圈的变焦镜头。作为满足该要求的...

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