• Thumbnail for Ludwig Bertele
    Ludwig Jakob Bertele (25 December 1900 – 16 November 1985) was a German optics constructor. His developments received universal recognition and serve as...
    11 KB (1,379 words) - 00:25, 16 May 2024
  • Bertele is a German surname. Notable people with the surname include: Ludwig Bertele (1900–1985), German optics constructor Michael von Bertele (born...
    544 bytes (67 words) - 23:49, 9 May 2021
  • Thumbnail for Zeiss Sonnar
    The Zeiss Sonnar is a photographic lens originally designed by Dr. Ludwig Bertele in 1929 and patented by Zeiss Ikon. It was notable for its relatively...
    15 KB (1,596 words) - 18:07, 21 March 2023
  • Thumbnail for Zeiss Biogon
    design featuring seven elements in four groups) was designed in 1934 by Ludwig Bertele while he was working for Zeiss, as a modification of his earlier Sonnar...
    19 KB (1,908 words) - 21:14, 27 June 2023
  • Thumbnail for Contax
    the camera body, and black-enamelled finish. The young lens designer Ludwig Bertele, formerly of Ernemann, was charged with the responsibility of designing...
    44 KB (6,688 words) - 07:01, 2 September 2023
  • Thumbnail for History of photographic lens design
    ISSN 0026-8240. Die Leica, 1933 No. 6. "Was ist eigentlich "Elmar"? Ludwig Bertele, Photographic Lens. United States Patent #1,584,271; granted 11 May...
    116 KB (16,090 words) - 04:18, 29 May 2024
  • Thumbnail for Cooke triplet
    positive meniscus element was inserted into the front air space, as in Ludwig Bertele's enduring Ernostar and Sonnar designs for Ernemann and Carl Zeiss AG...
    13 KB (1,384 words) - 20:37, 22 August 2023
  • Thumbnail for Large format lens
    graduated filters. Hologon The Biogon is an ultra-wide-angle design by Ludwig Bertele based on a double-ended reversed-telephoto objective. It was made by...
    10 KB (1,401 words) - 12:31, 26 September 2022
  • Thumbnail for Praktica
    Pentacon GmbH page). 1924 The high-speed Ernostar lens designed by Ludwig Bertele of Ernemann AG, was first made in f/2, then in f/1.8 maximum aperture...
    9 KB (1,097 words) - 10:43, 29 April 2023
  • Thumbnail for Carl Zeiss AG
    innovations. One of the most significant designers was the ex-Ernemann man Dr Ludwig Bertele, famed for his Ernostar high-speed lens. With the advent of the Contax...
    65 KB (7,566 words) - 12:33, 11 June 2024