F-SYSTEM
Meaning of F-SYSTEM in English
ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
Etymology: f (symbol for focal length )
: a system of camera lens aperture markings that uses f-numbers
Webster's New International English Dictionary.
Новый международный словарь английского языка Webster.
2012