光圈值 meaning in English

aperture value
f-number
optimum aperture

Manual mode allows independent adjustment of both controls
手动曝光模式需分别调整速度和光圈值。
Shutter speed from 112 , 000 to 30 sec . manually selectable in 12 ev or 13 ev increments , aperture set by autoexposure program manual exposure ( m - mode )
可以在112 , 000秒至30秒的快门速度范围内手动选择快门速度，每次以12ev或13ev增减；自动曝光程式会自动设定光圈值
Any shutter speed aperture selectable in 12 ev or 13 ev increments ; correct , over - under - exposure indicated in viewfinder ; bulb also selectable
可选择任何光圈值及快门速度，每次以12ev或13ev增减；观景器内及导向显示屏上会显示影像是否曝光正确、曝光过度曝光不足；可选择bulb
Date and time , camera settings ( exposure mode , shutter speed , aperture value , exposure compensation value , metering method , flash on off , camera sensitivity , white balance setting , focal length , etc . ) , color space
日期及时间、相机设定(曝光模式、快门速度、光圈值、曝光补偿值、测光方法、开启关闭闪灯、相机感光度、白色平衡设定、焦距等) 、彩色色域