Focal Ratio
Noun
1.
focal ratio
- the ratio of the focal length to the diameter of a (camera) lens system
f number
,
stop number
,
speed
ratio
- the relative magnitudes of two quantities (usually expressed as a quotient)
<< Previous
Word Browser
Next >>
fmri
fnese
fnma
fo
fo'c'sle
foal
foaled
foalfoot
foam
foam at the mouth
foam rubber
foamentation
foamflower
foaminess
foaming
foamingly
foamless
foamy
fob
fob off
focal
focal distance
focal epilepsy
focal infection
focal length
focal point
focal seizure
focalisation
focalise
focalization
focalize
focally
focillate
focillation
focimeter
focus
focus on
focused
focusing
focussed
focussing
fodder
fodderer
fodient