focal length

(redirected from Effective focal length)
Also found in: Dictionary, Medical, Acronyms, Encyclopedia.
Graphic Thesaurus  🔍
Display ON
Animation ON
  • noun

Synonyms for focal length

the distance from a lens to its focus

Related Words

References in periodicals archive ?
Digital sensors are currently smaller than the area of a 35mm image, so the effective focal lengths of lenses are increased by about 50% when attached to a digital camera.
The system is fully motorised with microprocessor control, and the lens offers parfocal selection of five effective focal lengths, four selectable filters and a four-line backlit display of focal length, filter position, focus range and operating status.
Full browser ?