| 释义 |
f-numbern. 数, 光圈数 f-number f-num.ber AHD: [µf“n¾m”b…r] D.J. [6ef7nJmb*]K.K. [6Wf7nJmb+]n.(名词)The ratio of the focal length of a lens or lens system to the effective diameter of its aperture.Also called f-stop F值:物镜或物镜系统的焦距与入射光孔直径之比也作 f-stop语源:1. f(ocal length) f(ocal length)2. number number |