f-stop
释义
n. 相机的光圈数刻度；f 制光圈
例句
1·Remember, going up an f -stop cuts the amount of light by half.
记住，调高f值是减少光线量的一半。
2·Camera lenses have two general attributes: f -stop and focal length.
照相机镜头有两项一般属性：f制光圈和焦距。
3·The f -stop values mentioned above are fairly standard among lenses;
上述的f值是一般标准镜头的常用值；
|