相对孔径是什么意思-相对孔径的词语解释-相关组词-词语-近音词-同音词 - 掌上跨屏通词语词典

题目

更新时间：2025-02-03 06:01:36

求解答，词语相对孔径是什么意思？再说说相对孔径有什么含义？

答案

相对孔径的百科含义

光学镜头的重要参数之一，用镜头的有效孔径和焦距之比表示。相对孔径是个比值。相对孔径的大小表示镜头纳光的多少。相对孔径的倒数称光孔号码或光圈系数。最大的相对孔径刻在镜头上。1：2.8 比 1：4要好些。

相对孔径的词语组词

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