Laack lenses

From Camera-wiki.org
Jump to: navigation, search

Julius Laack (later Laack Söhne) in Rathenow (Brandenburg, Germany) 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 camera applications as well as enlargers and projectors.[1] [2] An advertisement in 1934 claimed that over 500,000 lenses had been produced by Laack and Laack Söhne.[3]

Contents

Standard Lenses

Atelier Schnellarbeiter

A Petzval type lens[4]

  • Laack 6 cm f/3.5 Schnellarbeiter lens,[5]

Dialytar

This name was used on several lenses of different design and maximum aperture. Greenleaf[2] 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
      • in Glunz 3x4[6]
    • f/4.5 120mm
      • in Compur shutter[7]
    • f/4.5 135mm
      • in Wanderer? 9x12 [8]
    • f/4.5 210mm[9]
    • f/4.5 25cm barrel lens[10]
    • f/6.3 21cm barrel lens[11]
  • Dialytar Series P
  • Dialytar Series T
  • A four-lens Anastigmat with one cemented and one air filled pair
    • f/3.5 15 cm in Compur shutter[13]
    • f/4.5 7.5 cm to cover 4.5x6 [14]
    • f/4.5 10.5 cm to cover 6x9 [14]
    • f/4.5 11.5 cm to cover 6x9 [14]
    • f/4.5 13.5 cm to cover 9x12 [14]
    • f/4.5 13.5 cm in Compur shutter [15]
    • f/4.5 18 cm to cover 10x15 [14]
    • f/4.5 21 cm to cover 13x18 [14]
    • f/4.5 25 cm to cover 28x24 [14]
    • f/6.3 15 cm in Pronto shutter[16]
    • f/6.3 18 dm to cover 10x15 [14]
    • f/6.3 21 cm to cover 13x18 [14]
    • f/6.3 25 cmto cover 18x24 [14]
  • Dialytar Weitwinkel
  • Doppelanastigmat Dialytar
    • f/4.5 13.5 cm in Compur shutter[18]

Doppel-Polynar

A simple double-anastigmat, with two cemented doublets.[2]

Egotar

Egolyt

Extra Rapid Aplanat

Pololyt

A simple triplet.

Polynar

  • Polynar
    • f/6.8 42mm
      • in C.E.Nei Knirps 3x3[40]
  • Polynar C
  • Polynar C1
    • f/6.8 190mm
      • for military application[42]

Polyplan

A simple double-anastigmat, with two cemented doublets.

  • f/7.2 135mm in IBSO shutter[43]
  • f/7.2 135mm in Pronto shutter[44]
  • f/7.2 135mm in Vario shutter[45]

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).[2]

Regulyt

A simple triplet.

Texon

  • f/2.7 25mm
    • on a Victor Modell 5 16mm cine camera[46]
    • on a Schalie Collée camera 16mm[47]
  • f/3.5 5.5cm[48]
  • f/4.5 7.5cm [49]
  • f/4.5 10.5cm[50]
  • f/4.5 11.5cm[51]


Cine Lenses

Cine-lens

A Petzval design

  • f/2 15 to 85mm[1]

Cine-Pololyt

A Cooke design for 16mm cine cameras

Cine-Polyxentar

A Cooke design for 8 and 16mm cine cameras

Fineston

details needed [52]

Enlarger Lenses

Definon

An enlarger lens[53]

  • f/4.5 5.5cm to cover 30x40cm[53][54]
  • f/4.5 6cm to cover 40x40cm[53]
  • f/4.5 7.5cm to cover 45x60cm[53][55]
  • f/4.5 9cm to cover 60x60cm[53]
  • f/4.5 10.5cm to cover 60x90cm[53]
  • f/4.5 13.5cm to cover 90x120cm[53]
  • f/6.3 5.5cm to cover 30x40cm[53]
  • f/6.3 7.5cm to cover 45x60cm[53]
  • f/6.3 10.5cm to cover 60x90cm[53]

Super Definon

  • f/3.5 5.5cm to cover 30x40cm[53]
  • f/3.5 7.5cm to cover 45x60cm[53]
  • f/3.5 9cm to cover 60x60cm[53]

Konkretar

Repro-Polyxentar

An Anastigmat-Apochromat with 90º viewangle

Vergrösserungs Anastigmat


Film Projector Lenses

Heleston

Film projector lens [52]

  • f/1.6 2.5cm[60]
    • in Eumig Alter 8 mm projector[61]


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/1.35 3 cm[62]
  • f/1.4 100 mm Design nº 1[63]
  • f/1.4 100 mm Design nº 2[64]


Links

Notes

  1. 1.0 1.1 1.2 1.3 1.4 Kingslake, R (1939) The Development of the Photographic Objective. in: Keith Henney, Handbook of photography. (London: Whittlesey House, pp.37-68, esp. p. 59.
  2. 2.0 2.1 2.2 2.3 Greenleaf, Allen R. (1950) Photographic Optics. Macmillan, New York. pp82 & 201-8.
  3. The 50th anniversary of the company is mentioned for 1934: The British Journal Photographic Almanac and Photographer's Daily Companion 1934, p309.
  4. Schnellarbeiter (literally 'fast worker') was a lens design and term appears on Ferrotype cameras by more than one maker.
  5. On a Ertee 'cannon' camera by Romain Talbot, for 'button' ferrotypes.
  6. pho-Tony via Flickr
  7. Seen in a Yahoo Japan on-line auction
  8. Laack Rathenow Doppel Anastigmat Dialytar
  9. brass lens in Reisekamera (Dorotheum Auctions 2011 lot 404)
  10. Küllenberg Essen Laack s/n 420326;; brass barrel lens, eBay October 2012
  11. eBay November 2012
  12. brass barrel lens, eBay October 2012
  13. Enter-net de
  14. 14.0 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 Laack Photo-Optik : Bei Tag und Nacht Katalog der Firma Julius Laack Söhne, Rathenow, Werkstätten für Präzisions-Optik und Mechanik [Rathenow]: 1939.p. 12.(seen on eBay)
  15. Laack Rathenow LP Auktioner
  16. Stereo Camera, lens s/n 59344) Yeshen Venema's site
  17. Barrel lens, Laack Rathenow s/n202452; eBay November 2012
  18. Laack Rathenow s/n 132368 via Flickr
  19. in IBSO shutter; eBay August 2012
  20. eBay October 2012
  21. in IBSO shutter; eBay August 2012
  22. Brass barrel lens, Breker September 25, 2010 Lot 299
  23. Brass barrel lens, eBay October 2012
  24. Christies 2005 Lot 219
  25. eBay September 2012
  26. Christies 2005 Lot 218
  27. ROW Pololyt 1:3,5 f=75mm 602534 in Blitz I shutter
  28. eBay October 2012
  29. in IBSO shutter; eBay August 2012
  30. s/n 128241 Laack-Rathenow via Flickr
  31. zniv via Flickr.—Gerard Vogels via Flickr
  32. s/n 222626 K.W. Box Reflex at Early Photography
  33. eBay September 2012
  34. Laack Gazelle Tropical 6x9 with Laack Rathenow s/n 151980
  35. Laack Rathenow s/n 91253 in IBSO (Romanian on-line auction, November 2012).
    Laack Rathenow s/n 102664 in Compur (eBay March 2011).
  36. Laack Rathenow s/n 112939 in Compur in a Laack Gazelle Tropical via Flickr
  37. in plate camera; eBay October 2012
  38. Laack Rathenow s/n 103031 via Flickr
  39. Now defunct German on-line auction system
  40. Cjhrisies 2006 Lot 436; Christies 2007 lot 333
  41. Laack Söhne Rathenow s/n 31072
  42. s/n 27658 Jul. Laack Söhne, Rathenow
  43. s/n 17553 "Julius Laack Söhne Rathenow"; loose lens in shutter, eBay October 2012
  44. s/n 22451 "Julius Laack Söhne Rathenow"; 9x12 plate camera (Wanderer /) in Fotosidans Forum.
  45. s/n 12938 "Laack" almost square 12 x 9 cameravia Flickr
    s/n 55072 "Julius Laack Söhne Rathenow"; eBay January 2012.
  46. s/n 195656 on-line Auction Germany
  47. s/n 195466. Christies 2007, lot 63
  48. Barrel lens (for enlarger?), s/n 405856 Laack Rathenow; eBay October 2012
  49. sn 268433 blog.sina.com.cn
  50. s/n 48xxxx Brass barrel lens (Black Kamera Kan)
  51. s/n 261977, Laack Rathenow, brass barrel lens, eBay October 2012
  52. 52.0 52.1 52.2 Laack Photo-Optik : Bei Tag und Nacht Katalog der Firma Julius Laack Söhne, Rathenow, Werkstätten für Präzisions-Optik und Mechanik [Rathenow]: 1939. (seen on eBay)
  53. 53.00 53.01 53.02 53.03 53.04 53.05 53.06 53.07 53.08 53.09 53.10 53.11 53.12 Laack Photo-Optik : Bei Tag und Nacht Katalog der Firma Julius Laack Söhne, Rathenow, Werkstätten für Präzisions-Optik und Mechanik [Rathenow]: 1939.p. 16.(seen on eBay)
  54. mentioned in a Flcikr forum
  55. Laack Anastigmat Definon s/n 409196 via forum.mflenses.—Laack Anastigmat Definon s/n 453110 (eBay August 2011).
  56. eBay November 2012
  57. 57.0 57.1 57.2 57.3 Laack Photo-Optik : Bei Tag und Nacht Katalog der Firma Julius Laack Söhne, Rathenow, Werkstätten für Präzisions-Optik und Mechanik [Rathenow]: , 1939.p. 18.(seen on eBay)
  58. eBay October 2012
  59. eBay October 2012
  60. Laack Rathenow s/n 430551 (seen on a Polish auction site)
  61. Laack Rathenow s/n 470054
  62. German Patent 665520, filed 20 September 1934 and granted 27 September 1938 to Julius Laack Söhne, Rathenow, at Espacenet, the patent search facility of the European Patent Office.
  63. Julius Laack Söhne1938 DCE 0 665 520 dioptrique.info
  64. Julius Laack Söhne1938 DCE 0 665 520 II dioptrique.info
Personal tools
Namespaces
Variants
Actions
Navigation
External
Toolbox