Primoplan

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Primoplan 1: 1.9 / 58mm with lens cut

The Primoplan is a high-speed interchangeable lens by Meyer-Optik , Görlitz, sold from 1938 onwards . It is derived from the Ernostar lens and has five lenses in four groups. The Primoplan competed with the Biotar 1: 1.5 / 75 mm from Zeiss at a considerably lower price, slightly lower light intensity but slightly better imaging performance .

Both the Ernostar and the Primoplan are extensions of a Cooke triplet : two groups of lenses are placed around a central diverging lens, each of which acts as a collecting lens. The rear group consists of a single bi-convex converging lens. The front group consists of a total of three lenses. The field lens is slightly plano-convex. Another slightly meniscus- shaped (curved) converging lens, cemented in two parts, follows . The latter is a single lens in the original Ernostar lens.

Pre-war models were made of chrome-plated brass, post-war models were made of aluminum.

Mainly variants with 58 mm and 75 mm focal length were produced. The light intensity with the aperture open is 1: 1.9. Post-war lenses were available with connections for the Praktica ( M42 ) and for the Ihagee Exakta / Exa. Pre-war models for the medium format cameras Exakta 6x6 and Reflex-Korelle had a focal length of 100 mm. The Primoplan 58 f / 1.9 was the fastest standard lens from Exakta; with him the Kine Exakta was offered as "Nacht Exakta". The 75 mm version was popular for stage, sports and portrait photography.

Meyer produced a 30 mm f / 1.9 Primoplan for Arri 35 mm film cameras.

Web links

Commons : Primoplan  - collection of images, videos and audio files

Individual evidence

  1. ↑ www.taunusreiter.de , accessed on June 14, 2011
  2. ^ Hans Martin Brandt (1968) The photographic lens. P. 99
  3. ↑ captjack.exaktaphile.com ( Memento of the original from February 11, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed June 14, 2011 @1@ 2Template: Webachiv / IABot / captjack.exaktaphile.com
  4. ↑ Günther Kadlubek, Rudolf Hillebrand (2000) Kadlubek's object catalog. Publishing house Rudolf Hillebrand, Neuss. P. 45f
  5. ↑ Günther Kadlubek, Rudolf Hillebrand (2000) Kadlubek's object catalog. Publishing house Rudolf Hillebrand, Neuss. P. 45f
  6. ↑ photobutmore.de , accessed on June 14, 2011
  7. ↑ photobutmore.de , accessed on June 14, 2011
  8. ↑ www.nwwone.org , accessed June 14, 2011