...倍-14倍放大对焦至屏幕清晰即可焦距(Focal-Length): 25mm 水平视场角 ( Horizontal Field ): 16.2°相对孔径(Aperture F):F1.2接口(Mount):C-M4/3系统接口 需加C-M4/3转接环 转接环安全链接地址:像面尺寸(Forma..
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Aperture size and f-number 光圈大小与焦距比数
For example, the focal length of an 8" (203.2mm) aperture with a focal ratio of f/10 would be 203.2 x 10 = 2032mm.
比如,孔径为8英寸(203.2mm),焦比为f/10的透镜,其焦距为203.2 x 10 = 2032mm。
EOTS is part of the F-35 Electro-Optical Sensor System that consists of Northrop Grumman's Distributed Aperture System and EOTS.
F - 35光电传感器系统由EOTS系统和诺斯罗普·格鲁门公司的分布式孔径系统组成。
Portrait mode chooses a large aperture (a small 'f' number) which will make the depth of field (the amount of your shot in focus) smaller.
人像模式用一个大光圈(f值小),而让景深(清晰对焦的那部分)变小。
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