Difference between revisions of "Polyplast"

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| image_source=http://www.flickr.com/photos/heritagefutures/8269002863/in/pool-camerawiki/
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| image=http://farm3.static.flickr.com/8487/8269002863_0883dbe405.jpg
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| image_text= [[Staeble | Dr. Staeble's]] Polyplast-Satz (lens set)
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| image_by=Dirk HR Spennemann
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[[Staeble|Dr. Staeble]]'s '''Polyplast-Satz''' was a lens kit for folding cameras.<ref name="Staeble1912">Optisches Werk Dr. Staeble & Co. G.M.b.H Muenchen. pp. 32-36: 7.5, 10.5, 12, 13.5, 16.5, 19.5, 22, 26, 32 [http://www.cameraeccentric.com/html/info/staeble_1.html 1912 Catalogue extracts] at www.cameraeccentric.com</ref> It allowed to assemble lenses by mounting one back element on the back of a shutter/iris assembly, and a front elements group on the frontside of the same shutter. The back element remained in place while  the front element group could easily be exchanged by another since it was fixed on a special fast mount. This allowed for a range of focal lengths.<ref> Some commentators were very critical of this approach: "Occasionally, for some reason, a designer will try the effect of combining two dissimilar cemented components about a central stop. It is hard to see the virtue of such an arrangement, except perhaps as an economy measure." (Kingslake, Rudolf [1989] A history of the photographic lens. London: Academic Press, p. 102).</ref> The lens kit could be purchased as single lenses or as a set of three, together with three graded yellow filters (''Hüblfilter'').
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== Advertisements ==
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| image_source=http://www.flickr.com/photos/89864432@N00/2434965060/in/pool-camerawiki/
 
| image_source=http://www.flickr.com/photos/89864432@N00/2434965060/in/pool-camerawiki/
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| image=http://farm3.static.flickr.com/2353/2434965060_1fa6607fa7_z.jpg
 
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| image_text=Old ad for the lens kit
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| image_text=1919 advertisement for the lens kit
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| scan_by=Uwe Kulick
 
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[[Staeble|Dr. Staeble]]'s '''Polyplast-Satz''' was a lens kit for folding cameras. It allowed to assemble lenses by mounting one back element on the back of a shutter/iris assembly, and a front elements group on the frontside of the same shutter. The back element stayed fixed, the front element group could easily be exchanged by another since it was fixed on a special fast mount.
 
  
==Links==
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== Notes ==
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<references />
  
*The advertisement above mentions the famous "Belichtungstafel nach Dr. Staeble" which could be ordered from Staeble for 50 Pfg. Here is a link showing an example of that written exposure aid of times before [[EV]]s could be measured by everyone with meters:<br/>[http://www.fotoamateure-teublitz.de/Kuriositaten/Belichtungstafel_Dr_Staeble_1927.pdf Belichtungstafel nach Dr. Staeble] at Fotoamateure Teublitz [http://www.fotoamateure-teublitz.de]
 
  
 
[[Category:German lenses]]
 
[[Category:German lenses]]
 
[[Category:P]]
 
[[Category:P]]

Latest revision as of 12:09, 14 December 2012


Dr. Staeble's Polyplast-Satz was a lens kit for folding cameras.[1] It allowed to assemble lenses by mounting one back element on the back of a shutter/iris assembly, and a front elements group on the frontside of the same shutter. The back element remained in place while the front element group could easily be exchanged by another since it was fixed on a special fast mount. This allowed for a range of focal lengths.[2] The lens kit could be purchased as single lenses or as a set of three, together with three graded yellow filters (Hüblfilter).

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Notes

  1. Optisches Werk Dr. Staeble & Co. G.M.b.H Muenchen. pp. 32-36: 7.5, 10.5, 12, 13.5, 16.5, 19.5, 22, 26, 32 1912 Catalogue extracts at www.cameraeccentric.com
  2. Some commentators were very critical of this approach: "Occasionally, for some reason, a designer will try the effect of combining two dissimilar cemented components about a central stop. It is hard to see the virtue of such an arrangement, except perhaps as an economy measure." (Kingslake, Rudolf [1989] A history of the photographic lens. London: Academic Press, p. 102).