Difference between revisions of "Rapid Rectilinear"

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A '''Rapid Rectilinear''' [[lens]], or '''RR lens''', is made of a symmetrical pair of cemented doublets. It was introduced by [[Dallmeyer]] in 1866. At the same time [[Steinheil]] invented a similar construction, the '''Aplanat''' lens. It's a pair of achromatic lens element groups, arranged symmetrically before and behind the [[diaphragm]]. The outer lens elements of the two lens groups are concave [[meniscus lens]] elements, the inner lens elements are convex meniscus lens elements, made of another glass sort. This lens construction reduces effectively radial distortion. Dallmeyer's original '''Rectilinear''' wide angle lens's rear lens group is smaller in diameter than the front lens group. The Rapid Rectilinear has two equal sized lens goups, as well as the Aplanat's. Steinheil offered a landscape Aplanat, a portrait Aplanat and a wide angle Aplanat.
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'''Imaging samples'''
 
 
{{Flickr image
 
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| image_source=http://www.flickr.com/photos/89864432@N00/2800228159/in/pool-camerawiki/
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| image_source=http://www.flickr.com/photos/uwe_kulick/2800228159/in/pool-camerawiki/
 
| image=http://farm4.static.flickr.com/3031/2800228159_54e2bd7b43_m.jpg
 
| image=http://farm4.static.flickr.com/3031/2800228159_54e2bd7b43_m.jpg
 
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| image_text=Aplanat and wide angle Aplanat
 
| image_text=Aplanat and wide angle Aplanat
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A '''Rapid Rectilinear''' [[lens]], or '''RR lens''', is made of a symmetrical pair of cemented doublets. It was introduced by [[Dallmeyer]] in 1866. At the same time [[Steinheil]] invented a similar construction, the '''Aplanat''' lens. It's a pair of achromatic lens element groups, arranged symmetrically before and behind the [[diaphragm]]. The outer lens elements of the two lens groups are concave [[meniscus lens]] elements, the inner lens elements are convex meniscus lens elements, made of another glass sort. This lens construction reduces effectively radial distortion. Dallmeyer's original '''Rectilinear''' wide angle lens's rear lens group is smaller in diameter than the front lens group. The Rapid Rectilinear has two equal sized lens goups, as well as the Aplanat's. Steinheil offered a landscape Aplanat, a portrait Aplanat and a wide angle Aplanat.
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'''Imaging samples'''
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{|class="plainlinks floatleft"
 
{|class="plainlinks floatleft"
 
||[http://www.flickr.com/photos/89864432@N00/2967738482/in/pool-70543216@N00 http://farm4.static.flickr.com/3142/2967738482_92f4333c19_m.jpg]
 
||[http://www.flickr.com/photos/89864432@N00/2967738482/in/pool-70543216@N00 http://farm4.static.flickr.com/3142/2967738482_92f4333c19_m.jpg]
 
||[http://www.flickr.com/photos/89864432@N00/2967734414/in/pool-ruinen http://farm4.static.flickr.com/3170/2967734414_ae3b22cf5b_m.jpg]
 
||[http://www.flickr.com/photos/89864432@N00/2967734414/in/pool-ruinen http://farm4.static.flickr.com/3170/2967734414_ae3b22cf5b_m.jpg]
 
||[http://www.flickr.com/photos/89864432@N00/2966889073/in/pool-70543216@N00 http://farm4.static.flickr.com/3167/2966889073_ee5d17bb45_m.jpg]
 
||[http://www.flickr.com/photos/89864432@N00/2966889073/in/pool-70543216@N00 http://farm4.static.flickr.com/3167/2966889073_ee5d17bb45_m.jpg]
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|}<br style="clear:left"/>made with a '''Rectilineaire Extra Rapide''' on an [[Antique Camera Simulator]]
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|}<br style="clear:left"/>Made with a '''Rectilineaire Extra Rapide''' on an [[Antique Camera Simulator]]<br/><small>images by {{image author|Uwe Kulick}}</small> {{with permission}}
 
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{{br}}
  

Revision as of 23:06, 24 March 2012

2909415885_d3dbd80fd1_m.jpg
Rectiligne rapide
image by Uwe Kulick (Image rights)
2800228159_54e2bd7b43_m.jpg
Aplanat and wide angle Aplanat (Image rights)

A Rapid Rectilinear lens, or RR lens, is made of a symmetrical pair of cemented doublets. It was introduced by Dallmeyer in 1866. At the same time Steinheil invented a similar construction, the Aplanat lens. It's a pair of achromatic lens element groups, arranged symmetrically before and behind the diaphragm. The outer lens elements of the two lens groups are concave meniscus lens elements, the inner lens elements are convex meniscus lens elements, made of another glass sort. This lens construction reduces effectively radial distortion. Dallmeyer's original Rectilinear wide angle lens's rear lens group is smaller in diameter than the front lens group. The Rapid Rectilinear has two equal sized lens goups, as well as the Aplanat's. Steinheil offered a landscape Aplanat, a portrait Aplanat and a wide angle Aplanat.


Imaging samples

2967738482_92f4333c19_m.jpg 2967734414_ae3b22cf5b_m.jpg 2966889073_ee5d17bb45_m.jpg


Made with a Rectilineaire Extra Rapide on an Antique Camera Simulator
images by Uwe Kulick (Image rights)


Links

Glossary Terms
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