Zoom lens
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| - | :http://jahsonic.wordpress.com/2007/10/09/eyecandy-3/ | + | A '''zoom lens''' is a mechanical assembly of [[lens (optics)|lens elements]] for which the [[focal length]] (and thus [[angle of view]]) can be varied, as opposed to a fixed focal length (FFL) lens (see [[prime lens]]). They are commonly used with [[still camera|still]], [[video camera|video]], [[motion picture camera|motion picture]] [[camera]]s, [[projector]]s, some [[binoculars]], [[microscope]]s, [[telescope]]s, [[telescopic sight]]s, and other [[optical instrument]]s. |
| - | ''[[Cinematic effects in literature]]'', is a notion first put forward to my knowledge by [[Lotte H. Eisner]] in ''[[The Haunted Screen]]''. | + | |
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| - | [[Lotte H. Eisner]] argues that [[dream novel]]s such as ''[[Lucinde]]'', ''[[Flegeljahre]]'' and ''[[Heinrich Von Ofterdingen]]'' try to depict [[photographic technique]]s such as [[metamorphose]]s and [[superimposition]]. | + | |
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| - | She writes: | + | |
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| - | :"Romantic authors such as [[Novalis]] or [[Jean Paul]], while anticipating the Expressionist notions of [[visual]] [[delirium]] and of a continual state of [[effervescence]], also seem almost to have foreseen the cinema's consecutive sequences of images. In the eyes of [[Schlegel]] in ''[[Lucinde]]'', the loved one's features become indistinct: 'very rapidly the outlines changed, returned to their original form, then metamorphosed anew until they disappeared entirely from my exalted eyes.' And the [[Jean Paul]] of the ''[[Flegeljahre]]'' says: 'The invisible world wished, like chaos, to give birth to all things together; the flowers became trees, then changed into columns of cloud; and at the tops of the columns flowers and faces grew. In [[Novalis]]'s novel ''[[Heinrich von Ofterdingen]]'' there are even [[superimposition]]s." | + | |
| - | She concludes: | + | A true zoom lens, also called a [[parfocal lens]], is one that maintains focus when its focal length changes. A lens that loses focus during zooming is more properly called a [[varifocal lens]]. |
| - | :"It is reasonable to argue that the [[German cinema]] is a development of [[German Romanticism]], and that modern technique [cinematography] merely lends visible form to Romantic fancies." | + | ==See also== |
| + | By focal length: | ||
| + | *[[Telephoto lens]] | ||
| + | *[[Prime lens]] | ||
| + | *[[Wide-angle lens]] | ||
| + | *[[Superzoom]] | ||
| + | Focus attributes: | ||
| + | *[[Parfocal lens]] | ||
| + | *[[Varifocal lens]] | ||
| + | By system: | ||
| + | *[[Canon_EF_lens_mount#List_of_EF_lenses|List of Canon EF lenses]] | ||
| + | *[[Nikon_F_Mount|Nikon F-mount]] | ||
| + | *[[Minolta_AF#Lenses_.26_Tele-Converters|Minolta AF]] | ||
| - | [[Umberto Eco]] in ''[[Six Walks in the Fictional Woods]]'' also discusses cinematic effects in the work of Italian author [[Alessandro Manzoni]]. | ||
| - | :"One of the questions that has always intrigued Italian readers is why [[Alessandro Manzoni|Manzoni]] spends so much time, at the start of ''[[The Betrothed]]'', in describing Lake Como. We can forgive Proust for taking thirty pages to describe the process of getting to sleep, but why does Manzoni have to take at least a page to tell us, "Once upon a time there was a lake and here I intend to set my story"? If we tried reading this passage with a map before us, we would see that Manzoni builds his description by combining two film techniques: [[Zoom lens|zoom]] and [[slow motion]]. Don't tell me that a nineteenth-century writer didn't know about film ..." | ||
| - | == See also == | ||
| - | *[[Oneiric (film theory)]] | ||
| - | *[[Slow motion in literature]] | ||
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A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed focal length (FFL) lens (see prime lens). They are commonly used with still, video, motion picture cameras, projectors, some binoculars, microscopes, telescopes, telescopic sights, and other optical instruments.
A true zoom lens, also called a parfocal lens, is one that maintains focus when its focal length changes. A lens that loses focus during zooming is more properly called a varifocal lens.
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See also
By focal length:
Focus attributes:
By system:
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Zoom lens" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.
