f number
ریشه و کاربرد
ریشه
Derived from the term 'focal ratio', as it is the ratio of the lens's focal length to the diameter of the entrance pupil.
مثال
- The F number of the camera was adjusted to capture the perfect shot.
- A lower F number means a larger aperture and more light entering the camera.
- The photographer explained the importance of understanding the F number.
ترکیبهای رایج
Adjust F number Change F number F number setting F number control
تعریف انگلیسی
noun
- the ratio of the focal length to the diameter of a (camera) lens system