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Who invented the zoom lens? How does it work (specific technical details)? Michael Hardy 19:30, 30 Oct 2003 (UTC)
I'm not conviced by the end of the article, after all the first Zoom for 35mm photography had an aperture of f/2.8. As far as I know it was very sharp and very expansive. You will find a better range than 36-82 mm today but not more aperture. BTW they are some ready-made idea that I believe wrong like "progress in optical design", there's is not a huge technical progress : what you pay when you buy a lens was for a large part computation time I read somewhere that Zeiss used 200 persons for computation before WWII you can imagine that computers have radically changed the costs of lens design. Ericd 09:35, 12 Oct 2004 (UTC)
The development of sophisticated complex non-linearly driven four-group based designs (focusing, variator, compensator, relay master) is a fairly recent phenomenon that has been enabled by the development of new optical design techniques, computation algorithms, manufacturing — e.g. lower cost aspherical lenses, numerical control machines to manufacture precise non-linear driving cams — and material science — e.g. glasses with anomalous dispersion characteristics.
It seems appropriate to add some info here on how the variable and constant aperture lenses work and how they differ from each other. Does anyone have good info sources on this matter? Google mostly gives smoke and mirrors and also certain usability advantages of constant aperture, but not the specifics of how the optical schema differs.
There is duplication between this article and telephoto lens. I think the two articles should be combined. I think a zoom lens should be a subcategory of telephoto lens, as the distinction is basically a zoom lens is a telephoto lens with a varying focal length. The issues as to what a focal length is, what an angle of view is, and how these things are related are common to both. Furthermore, the artistic aspects of using a telephoto and zoom to me seem to be the same. Bottom line, there is information in the zoom article that relates to telephoto and vice versa. -- Lenehey 22:33, August 22, 2005 (UTC)
Copy of my answer on Talk:Telephoto lens :
NO ! It's a common confusion. A telephoto is not a zoom. And the artistic aspects of using a telephoto and zoom aren't the same especialy if we extend the topic to the use of zoom in movies and video. There's a (very incomplete BTW) article about photographic lenses another, another about wide-angle lenses, another about normal lenses, another about zoom lenses and I think it should stay like this. Ericd 21:40, 23 August 2005 (UTC)
The animated graphic, Simplified zoom lens in operation, seems like it contains an error. It appears that both the incoming light rays and the projected light rays move as the optics move. It seems like the incoming light rays should stay fixed and the projected light rays should move. Am I missing something? —Preceding unsigned comment added by John0720 ( talk • contribs)
The Panasonic Lumix TZ1 has a compacted zoom lens technology. Though it is the size of a compact digital camera, it can still zoom up to 10x or 12.5x. They won the TIPA award for smallest camera with the largest zoom in 2006. 128.6.175.77 21:02, 12 July 2006 (UTC)
Could it be possible to stop spreading old women tales? Some references would be welcome. -- Marc Lacoste 15:25, 28 December 2006 (UTC)
The animation is not good I guess, lights from both image and object are moving with the movement of the inner lense ! this is misleading.
1) the light coming from an object should be independent of the movement of the lense
otherwise
2) the visible movement of the image can either be due to the movement of the object and/or movement of the lense. Which makes the animation not very good since it cannot show the effect of the lense exclusively.
Jeroje 04:10, 10 August 2007 (UTC)jeroje
62.1.109.237 added the following paragraph:
The statement that larger zoom ratios equate to higher design complexity, bulk, and cost is unreferenced and wrong in my opinion — the most complex, bulky, and expensive zoom lenses are low-ratio large-aperture professional zooms. The statement about quality issues being "somewhat masked by digital sensor sampling" is extremely vague and also unreferenced — if it refers to issues being masked by low sensor resolution, one only needs to scan some reviews of cheap zoom lenses to see otherwise. This I removed these two statements from the article. -- Stybn ( talk) 16:50, 24 June 2009 (UTC)
It would be awesome if someone found/made a photo at 1x zoom, then drew smaller and smaller rectangular crops representing each zoom level, 3x, 5x, etc... It would be similar to this http://en.wikipedia.org/wiki/File:Vector_Video_Standards2.svg . I am currently searching for something like that to help me decide what level of zoom I want in a camera, and hoped to find one here. Or even photographic samples of 1x, 3x, 5x, 10x of the same subject would do well. Habanero-tan ( talk) 21:30, 13 July 2009 (UTC)
RM'ed above statement to talk because it's unverified. Parent article Superzoom also contains no reliable sources as to what a "Superzoom" lens is. Fountains of Bryn Mawr ( talk) 19:08, 1 December 2012 (UTC)
I wish this article had a diagram labeling the parts of a typical zoom lens.
By "typical", I mean the parts that typically are included in the thing people buy and attach to the front of a camera -- not just the lenses, but also the lens barrel, the mounting flange, the flange focal distance, the throat, the breech, the image circle, the anti-reflective coatings, the filter mount, etc.
In particular, what is (are) the name(s) of the 2 gear-like rings that many commonly available zoom lenses have, that are designed to be gripped by a human hand and turned -- turn one to change the zoom, and turn the other to change the focus? -- DavidCary ( talk) 00:01, 8 May 2014 (UTC)
There are several places in the article that reference "true zoom" and claim that varifocal zoom lenses are not zoom lenses. But there are no sources to back that up. The only source used actually doesn't make the claim at all. Does anyone have any reliable sources that discuss "true zoom" and/or "varifocal not a zoom" info? If not I think I'll do a clean-up and remove this apparent misinformation. CodeCurmudgeon ( talk) 18:04, 23 May 2016 (UTC)
Hello, Does anyone knows how and when the word "zoom" was first applied to a lens with a variable focal length ? Thanks ! Douzelignes ( talk) 16:51, 8 February 2017 (UTC)
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||||||||||||
|
Who invented the zoom lens? How does it work (specific technical details)? Michael Hardy 19:30, 30 Oct 2003 (UTC)
I'm not conviced by the end of the article, after all the first Zoom for 35mm photography had an aperture of f/2.8. As far as I know it was very sharp and very expansive. You will find a better range than 36-82 mm today but not more aperture. BTW they are some ready-made idea that I believe wrong like "progress in optical design", there's is not a huge technical progress : what you pay when you buy a lens was for a large part computation time I read somewhere that Zeiss used 200 persons for computation before WWII you can imagine that computers have radically changed the costs of lens design. Ericd 09:35, 12 Oct 2004 (UTC)
The development of sophisticated complex non-linearly driven four-group based designs (focusing, variator, compensator, relay master) is a fairly recent phenomenon that has been enabled by the development of new optical design techniques, computation algorithms, manufacturing — e.g. lower cost aspherical lenses, numerical control machines to manufacture precise non-linear driving cams — and material science — e.g. glasses with anomalous dispersion characteristics.
It seems appropriate to add some info here on how the variable and constant aperture lenses work and how they differ from each other. Does anyone have good info sources on this matter? Google mostly gives smoke and mirrors and also certain usability advantages of constant aperture, but not the specifics of how the optical schema differs.
There is duplication between this article and telephoto lens. I think the two articles should be combined. I think a zoom lens should be a subcategory of telephoto lens, as the distinction is basically a zoom lens is a telephoto lens with a varying focal length. The issues as to what a focal length is, what an angle of view is, and how these things are related are common to both. Furthermore, the artistic aspects of using a telephoto and zoom to me seem to be the same. Bottom line, there is information in the zoom article that relates to telephoto and vice versa. -- Lenehey 22:33, August 22, 2005 (UTC)
Copy of my answer on Talk:Telephoto lens :
NO ! It's a common confusion. A telephoto is not a zoom. And the artistic aspects of using a telephoto and zoom aren't the same especialy if we extend the topic to the use of zoom in movies and video. There's a (very incomplete BTW) article about photographic lenses another, another about wide-angle lenses, another about normal lenses, another about zoom lenses and I think it should stay like this. Ericd 21:40, 23 August 2005 (UTC)
The animated graphic, Simplified zoom lens in operation, seems like it contains an error. It appears that both the incoming light rays and the projected light rays move as the optics move. It seems like the incoming light rays should stay fixed and the projected light rays should move. Am I missing something? —Preceding unsigned comment added by John0720 ( talk • contribs)
The Panasonic Lumix TZ1 has a compacted zoom lens technology. Though it is the size of a compact digital camera, it can still zoom up to 10x or 12.5x. They won the TIPA award for smallest camera with the largest zoom in 2006. 128.6.175.77 21:02, 12 July 2006 (UTC)
Could it be possible to stop spreading old women tales? Some references would be welcome. -- Marc Lacoste 15:25, 28 December 2006 (UTC)
The animation is not good I guess, lights from both image and object are moving with the movement of the inner lense ! this is misleading.
1) the light coming from an object should be independent of the movement of the lense
otherwise
2) the visible movement of the image can either be due to the movement of the object and/or movement of the lense. Which makes the animation not very good since it cannot show the effect of the lense exclusively.
Jeroje 04:10, 10 August 2007 (UTC)jeroje
62.1.109.237 added the following paragraph:
The statement that larger zoom ratios equate to higher design complexity, bulk, and cost is unreferenced and wrong in my opinion — the most complex, bulky, and expensive zoom lenses are low-ratio large-aperture professional zooms. The statement about quality issues being "somewhat masked by digital sensor sampling" is extremely vague and also unreferenced — if it refers to issues being masked by low sensor resolution, one only needs to scan some reviews of cheap zoom lenses to see otherwise. This I removed these two statements from the article. -- Stybn ( talk) 16:50, 24 June 2009 (UTC)
It would be awesome if someone found/made a photo at 1x zoom, then drew smaller and smaller rectangular crops representing each zoom level, 3x, 5x, etc... It would be similar to this http://en.wikipedia.org/wiki/File:Vector_Video_Standards2.svg . I am currently searching for something like that to help me decide what level of zoom I want in a camera, and hoped to find one here. Or even photographic samples of 1x, 3x, 5x, 10x of the same subject would do well. Habanero-tan ( talk) 21:30, 13 July 2009 (UTC)
RM'ed above statement to talk because it's unverified. Parent article Superzoom also contains no reliable sources as to what a "Superzoom" lens is. Fountains of Bryn Mawr ( talk) 19:08, 1 December 2012 (UTC)
I wish this article had a diagram labeling the parts of a typical zoom lens.
By "typical", I mean the parts that typically are included in the thing people buy and attach to the front of a camera -- not just the lenses, but also the lens barrel, the mounting flange, the flange focal distance, the throat, the breech, the image circle, the anti-reflective coatings, the filter mount, etc.
In particular, what is (are) the name(s) of the 2 gear-like rings that many commonly available zoom lenses have, that are designed to be gripped by a human hand and turned -- turn one to change the zoom, and turn the other to change the focus? -- DavidCary ( talk) 00:01, 8 May 2014 (UTC)
There are several places in the article that reference "true zoom" and claim that varifocal zoom lenses are not zoom lenses. But there are no sources to back that up. The only source used actually doesn't make the claim at all. Does anyone have any reliable sources that discuss "true zoom" and/or "varifocal not a zoom" info? If not I think I'll do a clean-up and remove this apparent misinformation. CodeCurmudgeon ( talk) 18:04, 23 May 2016 (UTC)
Hello, Does anyone knows how and when the word "zoom" was first applied to a lens with a variable focal length ? Thanks ! Douzelignes ( talk) 16:51, 8 February 2017 (UTC)