focal length
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focal length

n. Abbr. f

The distance from the surface of a lens or mirror to its focal point. Also called focal distance, focus.

focal length, distance

(Physics / General Physics) the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens

focal length (f

The distance between the optical center of a lens or mirror to its focal point.

ThesaurusLegend: Synonyms Related Words Antonyms

Noun

focal length - the distance from a lens to its focus

focal distance

distance - the property created by the space between two objects or points

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accommodation calibrated focal length camera calibration camera lens compound microscope diopter dioptre equivalent focal length f-number fisheye lens focal distance focimetry focometer focus focused focusing focussed focussing Fresnel lens			The total amount of light reaching the film plane changes with the duration of exposure, aperture of the lens, and, and the effective focal length of the lens. Photography Tips by jessie thomas / Arts, visual and performing community The interposition of an achromatic binocular objective lens at half the focal length produced a back focus of 160mm--the system now has a effective focal length of 336mm at F:3. Discovery of a new refractor system by Wall, John / Journal of the British Astronomical Association 7x wide-angle lens will reduce the effective focal length of your lens by half or three-tenths, respectively. Accessory Lenses for Digital Cameras by Michalle Law / Computers and Internet community			eerily eeriness Eerisome Eero Saarinen eery EET ef EFA Efate efavirenz eff eff off effable efface Effaceable Effacement Effascinate Effascination effect effected Effecter Effectible Effection effective effective damage Effective focal length effective US controlled ships effectively Effectiveness effectivity Effectless effector effects effectual Effectual calling effectuality effectually Effectualness effectuate Effectuation Effectuose Effectuously effeminacy effeminate Effeminately Effeminateness Effemination effeminise Effeminize effendi efferent			Effective Downwind Effective Downwind Report Effective Draft Temperature Effective Drug & Alcohol Solutions Effective duration Effective Earth radius Effective Educational Practices effective energy Effective English Communication for Teaching and Research Effective English for Postgraduate Research Students Effective Enterprise Java Effective Environmental Concentration effective exhaust velocity Effective Expected Positive Exposure effective facsimile band Effective Fade Margin Effective Family Contribution Effective Feedback, Enhanced Learning effective field intensity Effective Field Size Effective field theory Effective Filtration Pressure effective firing time effective flange width Effective focal length effective focal spot effective focal spot effective focal spot effective focal spot effective focus effective focus effective focus effective focus effective force Effective founder population Effective founder population effective fragment Effective Free Euclidean Distance Effective Fringe Benefits Effective Full Charge Effective Full Time Employee Effective Full-Power Day Effective Full-Power Hours Effective Full-Power Years Effective Grinding Length Effective Gross Income Effective Gross Income Effective Gross Income Multiplier Effective Group Identifier effective gun bore line effective gust velocity effective half-life effective half-life effective half-life effective half-life

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focal length (redirected from Effective focal length)

focal length
(redirected from Effective focal length)