Difference between revisions of "Laack"

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m (Lens Designs: Corrected focal length in lens list to match cited source)
(Lens Designs: + ref to a patent - similar design to those listed already - and comment that the wide aperture suggests they are for cine use.)
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===Lens Designs===
 
===Lens Designs===
In addition, there are a number of lens designs on record. It is not clear whether any of these were ever put into production.
+
In addition, there are a number of lens designs on record. It is not clear whether any of these were ever put into production. The wide maximum apertures suggest these are cine lenses.
*f/1.4 100mm Design nº 1<ref>Julius Laack Söhne1938 DCE 0 665 520 [http://dioptrique.info/OBJECTIFS17/00828/00828.HTM dioptrique.info]</ref>
+
*f/1.4 100 mm Design nº 1<ref>Julius Laack Söhne1938 DCE 0 665 520 [http://dioptrique.info/OBJECTIFS17/00828/00828.HTM dioptrique.info]</ref>
*f/1.4 100mm Design nº 2<ref>Julius Laack Söhne1938 DCE 0 665 520 II [http://dioptrique.info/OBJECTIFS17/00829/00829.HTM dioptrique.info]</ref>
+
*f/1.4 100 mm Design nº 2<ref>Julius Laack Söhne1938 DCE 0 665 520 II [http://dioptrique.info/OBJECTIFS17/00829/00829.HTM dioptrique.info]</ref>
 +
* f/1.35 3 cm<ref>[http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=DE&NR=665520C&KC=C&FT=D&ND=3&date=19380927&DB=worldwide.espacenet.com&locale=en_EP German Patent 665520], filed 1934 and granted 1938, at [http://worldwide.espacenet.com/?locale=en_EP Espacenet], the patent search facility of the European Patent Office.</ref>
  
 
==Links==
 
==Links==

Revision as of 16:59, 26 November 2012



Julius Laack, later Julius Laack Soehne,[1] was a camera and lens maker, based at Curlandstrasse 60, Rathenow (Brandenburg, Germany).[2] The company seems to have started in 1884.[3] McKeown[4] lists a ferrotype camera from 1895, and a number of folding plate cameras. Laack lenses were used on smaller-format cameras at least up to the Second World War. During the time of the German Democratic Republic the company became state-owned and was part of VEB Rathenower Optische Werke (ROW), together with Emil Busch and Nitsche and Günther.[5]

Laack lenses, especially the Pololyt, appear on other German companies' cameras including the Altissa Altiflex and Altix, Welta Reflekta and KW Pilot Super. Laack also made cine lenses.


Cameras

Ferrotype camera

'Ferrotype Cannon' c1895

Gazelle Tropical

9×12 cm tropical folding plate camera. Pololyt or Dialytar lens and Compur or Ibsor shutter.[6]

Graziella

Merkur

10×15 cm folding plate camera. Polyxentar f/6.8 lens and Koilos shutter.

Padie

9×12 cm vertical folding plate camera. Pololyt f/6.8 lens and Rulex shutter.

Padie "Luxus" D

  • Omfa Muenchen (Munich) Doppel-Anastigmat Correktar f4.5 135mm and Rulex shutter[7]
  • Laack 4,5 Doppel Anastigmat in a Rulex shutter

Roland Reise Kamera

Saturn

Sport-Camera

Folding press camera with focal plane shutter. 6.5×9, 9×12 or 10×15 cm. Dialytar lens (various maximum apertures).

Stereo Camera

12 x 9 folding stereo plate camera

  • with Dialytar Series T f/6.3 15cm in Stereo Pronto[8]

Wanderer

6.5×9 cm folding plate camera[9]

? Meteor

Existence not certain[10]

Name? Horizontal

  • 12 x 9 folding plate camera with Polyplan f/7.2 135mm in Vario shutter[11]







Lenses

Laack was first and foremost an optical company making lenses for cameras, binocluars and microscopes. Laack produced a wide range of lenses for still photo and cine cameras as well as enlargers.[2][12] An advertisement in 1934 claimed that over 500,000 lenses had been produced by Laack and Laack Söhne.[3]

Standard Lenses

Atelier Schnellarbeiter

A Petzval type lens[13]

  • Laack 6 cm f/3.5 Schnellarbeiter lens,[14]

Dialytar

This name was used on several lenses of different design and maximum aperture. Greenleaf[12] lists three designs; one is a simple triplet, one (Series T!) a Tessar-type, and one a four-element lens like a Tessar, but with the two parts of the rear group not cemented, and with an air space.

  • Dialytar
    • f/2.7 50mm
    • f/4.5 135mm
      • in Wanderer? 9x12 [16]
    • f/4.5 210mm[17]
    • f/4.5 25cm barrel lens[18]
  • Dialytar Series P
  • Dialytar Series T
    • f/3.5 15cm in Compur shutter[20]
    • f/4.5 13.5 cmin Compur shutter [21]
    • f/6.3 15cm in Pronto shutter[22]
  • Doppelanastigmat Dialytar
    • f/4.5 13.5 cm in Compur shutter[23]

Doppel-Polynar

A simple double-anastigmat, with two cemented doublets.[12]

Egotar

Egolyt

Extra Rapid Aplanat

Pololyt

A simple triplet.

Polynar

  • Polynar
    • f/6.8 42mm
      • in C.E.Nei Knirps 3x3[45]
  • Polynar C
  • Polynar C1
    • f/6.8 190mm
      • for military application[47]

Polyplan

A simple double-anastigmat, with two cemented doublets.

  • f/7.2 135mm in IBSO shutter[48]
  • f/7.2 135mm in Pronto shutter[49]
  • f/7.2 135mm in Vario shutter[50]

Polyxentar

A double-anastigmat; either composed of two cemented triplets (f/6.8) or of two triplets with only the outermost pair of each cemented (f/4.5).[12]

Regulyt

A simple triplet.

Texon

  • f/2.7 25mm
    • on a Victor Modell 5 16mm cine camera[51]
    • on a Schalie Collée camera 16mm[52]
  • f/3.5 5.5cm[53]
  • f/4.5 7.5cm [54]
  • f/4.5 10.5cm[55]
  • f/4.5 11.5cm[56]

Cine Lenses

Cine-lens

A Petzval design

  • f/2 15 to 85mm[2]

'Cine-Pololyt

A Cooke design for 16mm cine cameras

Cine-Polyxentar

ACooke design for 8 and 16mm cine cameras

Enlarger Lenses

Vergrösserungs Anastigmat

Lens Designs

In addition, there are a number of lens designs on record. It is not clear whether any of these were ever put into production. The wide maximum apertures suggest these are cine lenses.

  • f/1.4 100 mm Design nº 1[59]
  • f/1.4 100 mm Design nº 2[60]
  • f/1.35 3 cm[61]

Links

Notes

  1. One of the sons was Ernst Laack (Listed as German soldier in WWI: Zeitschrift der Deutschen Gesellschaft für Mechanik und Optik 1914, p.272)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Kingslake, R (1939) The Development of the Photographic Objective. in: Keith Henney, Handbook of photography. (London: Whittlesey House, pp.37-68, esp. p. 59.
  3. 3.0 3.1 The 50th anniversary of the company is mentioned for 1934: British Journal Photographic Almanac and Photographer's Daily Companion 1934, p309.
  4. McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). p592.
  5. Die Geschichte der optischen Industrie in Rathenow II (History of the optical industry in Rathenow part II) at Kompetenzzentrum Optik Rathenow (Rathenow Optics Centre)
  6. wit Pololyt f/4.5 135mm
  7. Photoshop Guru
  8. s/n 59344) Yeshen Venema's site and Yeshen Venema via Flickr
  9. Pololyt f/4.5 105mm; eBay September 2012
  10. This model isn't in McKeown: can anyone confirm it?
  11. body 152mm x 145 m; ebay October 2012.
  12. 12.0 12.1 12.2 12.3 Greenleaf, Allen R. (1950) Photographic Optics. Macmillan, New York. pp82 & 201-8.
  13. Schnellarbeiter (literally 'fast worker') was a lens design and term appears on Ferrotype cameras by more than one maker.
  14. On a Ertee 'cannon' camera by Romain Talbot, for 'button' ferrotypes.
  15. pho-Tony via Flickr
  16. Laack Rathenow Doppel Anastigmat Dialytar
  17. brass lens in Reisekamera (Dorotheum Auctions 2011 lot 404)
  18. brass barrel lens, eBay October 2012
  19. brass barrel lens, eBay October 2012
  20. [http://www.enter-net.de/auktion/photo/laack.htm Enter-net de
  21. Laack Rathenow LP Auktioner
  22. Stereo Camera, lens s/n 59344) Yeshen Venema's site
  23. Laack Rathenow s/n 132368 via Flickr
  24. in IBSO shutter; eBay August 2012
  25. eBay October 2012
  26. in IBSO shutter; eBay August 2012
  27. Brass barrel lens, Breker September 25, 2010 Lot 299
  28. Brass barrel lens, eBay October 2012
  29. Christies 2005 Lot 219
  30. eBay September 2012
  31. Christies 2005 Lot 218
  32. ROW Pololyt 1:3,5 f=75mm 602534 in Blitz I shutter
  33. eBay October 2012
  34. in IBSO shutter; eBay August 2012
  35. s/n 128241 Laack-Rathenow via Flickr
  36. zniv via Flickr.—Gerard Vogels via Flickr
  37. s/n 222626 K.W. Box Reflex at Early Photography
  38. eBay September 2012
  39. Laack Gazelle Tropical 6x9 with Laack Rathenow s/n 151980
  40. Laack Rathenow s/n 91253 in IBSO (Romanian on-line auction, November 2012).
    Laack Rathenow s/n 102664 in Compur (eBay March 2011).
  41. Laack Gazelle Tropical via Flickr
  42. in plate camera; eBay October 2012
  43. Laack Rathenow s/n 103031 via Flickr
  44. Now defunct German on-line auction system
  45. Cjhrisies 2006 Lot 436; Christies 2007 lot 333
  46. Laack Söhne Rathenow s/n 31072
  47. s/n 27658 Jul. Laack Söhne, Rathenow
  48. s/n 17553 "Julius Laack Söhne Rathenow"; loose lens in shutter, eBay October 2012
  49. s/n 22451 "Julius Laack Söhne Rathenow"; 9x12 plate camera (Wanderer /) in Fotosidans Forum.
  50. s/n 12938 "Laack" almost square 12 x 9 cameravia Flickr
    s/n 55072 "Julius Laack Söhne Rathenow"; eBay January 2012.
  51. s/n 195656 on-line Auction Germany
  52. s/n 195466. Christies 2007, lot 63
  53. Barrel lens (for enlarger?), eBay October 2012
  54. sn 268433 blog.sina.com.cn
  55. s/n 48xxxx Brass barrel lens (Black Kamera Kan)
  56. Brass barrel lens, eBay October 2012
  57. eBay October 2012
  58. eBay October 2012
  59. Julius Laack Söhne1938 DCE 0 665 520 dioptrique.info
  60. Julius Laack Söhne1938 DCE 0 665 520 II dioptrique.info
  61. German Patent 665520, filed 1934 and granted 1938, at Espacenet, the patent search facility of the European Patent Office.