World Library  
Flag as Inappropriate
Email this Article

Thomas Rudolphus Dallmeyer

Article Id: WHEBN0002611812
Reproduction Date:

Title: Thomas Rudolphus Dallmeyer  
Author: World Heritage Encyclopedia
Language: English
Subject: John Henry Dallmeyer, Dallmeyer, History of the single-lens reflex camera, Photographers, WikiProject Missing encyclopedic articles/1911 verification/T2
Publisher: World Heritage Encyclopedia

Thomas Rudolphus Dallmeyer

Thomas Rudolphus Dallmeyer

Thomas Rudolphus Dallmeyer (16 May 1859 – 25 Dec. 1906),[1] English optician, was the son of John Henry Dallmeyer who ran an optics business. His maternal grandfather, Andrew Ross, was himself the first English photographic optician.[1]

After attending other schools, Thomas enrolled at Mill Hill School where he came under the tutelage of Dr. J.A.H. Murray who is best known as an editor of the Oxford English Dictionary. After leaving school, he entered his father's optometry business, while learning the theoretical side from Oliver Lodge.[1]

When Thomas was twenty-one, his father went on a long voyage to recuperate from overwork but died during the journey. Thomas took over and not only maintained the reputation of the lenses his father had designed but he continually improved them and added new patterns. Among his principal inventions was the first practical telephoto lens (patented 1891) which he afterwards elaborated into many special forms for various purposes, a rapid landscape lens, a rectilinear landscape lens, some of the earliest rapid lenses made with lenses from Jena, Germany, and the Adon and Junior Adon telephoto lenses. He also invented the Naturalist's Camera for which he received the medal of the Royal Photographic Society. He also designed the Dallmeyer-Bergen lens,[Note 1] which was the prototype of the anachromatic lenses.[1] It was suggested by a painter, J.S. Bergheim, who wished for a lens which would give him correct drawing and soft definition without sacrificing the natural structure of the original.[2]

He was the author of a standard book on the subject of telephoto lenses, Telephotography (1899).[3] He served as president of the Royal Photographic Society in 1900-1903.

He married Julia Fanny Thomas (d. 26 September 1936), daughter of Charles Thomas Lt 54 Bengal Infantry, on 13 January 1886.


  1. ^
    "The Dallmeyer-Bergen portrait lens is a simple telephoto composed of a single uncorrected lens, and the softness of definition is regulated by the diaphragm which is in front of all the glasses. It gives beautiful soft-focus effects without having to move the camera."
    — American Photography, Vol. 15, (1921) p.558


  1. ^ a b c d "Obituary; Thomas Rudolphus Dallmeyer" (1907) The Photographic Journal, Vol. 31, pp. 20–21, Royal Photographic Society, London
  2. ^ American Photography, Vol. 15, (1921) p. 74
  3. ^ TelephotographyThomas Rudolphus Dallmeyer (1899) : an elementary treatise on the construction, and application of the telephotographic lens, William Heinemann, London



This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.