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Tue 04 Jun

Dr. Richard Neuhauss - Dr. Richard Neuhauss Self-portrait 1901 Interference photograph (Lippmann process). 6.9 x 4.7 cm (8.5 x 6.3 x 1.9 cm). Signed, dated, titled and inscribed "Lippmann's Verfahren" in ink verso. Provenance Private property, Northern Germany Enclosure: Anonymous Stepped color plate (Agfa), n.d. Interference photography (Lippmann process) 6.7 x 8 x 1.5 cm The present object is an early color photograph produced using the so-called Lippmann process. Its inventor Gabriel Lippmann (1845-1921), a physicist, mathematician and professor at the Sorbonne in Paris from Luxembourg, was awarded the Nobel Prize in Physics in 1908 for his innovative photographic process based on interference, which he first presented at the Académie des Sciences in Paris in 1891. Shortly after its announcement, Lippmann's invention spread beyond the country's borders. Other photographers also experimented with his unpatented process. Between 1894 and 1900, competitions were organized by the 'Société française de photographie' to "promote the dissemination of Lippmann's method" alongside other methods. Notable admirers of the Lippmann method included the Frenchmen Louis and Auguste Lumière as well as the German physician and anthropologist Dr. Richard Neuhauss, who recognized the advantages of colour photography for his work early on. Having already visited Southern Europe, North Africa and Northern Europe as far as the North Cape during his studies, he undertook a research trip to the Pacific region in 1884 to collect anthropological material. Alongside anthropology, his second great passion was photography. Between 1894 and 1907 he was editor of the "Photographische Rundschau" and experimented with the Lippmann process from 1895. In 1898, he wrote a 70-page treatise with detailed technical instructions for the production of Lippmann photographs, in the preface to which he wrote: "Among the processes for the production of colored photographic images, that of G. Lippmann is so far the only one that rightly deserves the name 'color photography'." [Dr. med. R. Neuhauss, Die Farbenphotographie nach Lippmann's Verfahren. Neue Untersuchungen und Ergebnisse (Encyklopädie der Photographie, Heft 33), Halle Saale 1898]. As can be seen from his laboratory notes, Neuhauss made over 2500 Lippmann photographs, mainly of inanimate objects. An interferential colour photograph is a unique, non-reproducible photograph and is characterized by the highest colour brilliance, which can only be perceived from a certain angle. It consists of an approximately 2 mm thick glass plate coated with a silver emulsion as an optical image carrier, the reverse side of which is coated with black lacquer. A glass prism is glued to the coated side of the glass plate. To facilitate handling and protect the image, the edges are sealed with strips of black adhesive paper. Recording a light wave on a Lippmann plate is comparable to recording a sound wave on a record. In both cases, the oscillation (light or sound) leaves its imprint in a substance. In interference photography, the beam of white light directed at a suitable angle onto this imprint enables the eye to perceive any color that corresponds to the recorded wavelength. To date, the Lippmann process is the only photographic process that captures all the colors of the spectrum instead of splitting them into three colors. However, due to the complexity of production, the long exposure time of at least 5-10 minutes, the high costs (due to the use of mercury) and the limited usability due to the narrow viewing angle, it has not been able to establish itself in the long term and has been replaced by other methods. In this photograph, Richard Neuhauss presents himself in the pose of a self-confident scholar at the height of his scientific career in a private setting in a housecoat, the colorful pattern of which is particularly suitable for demonstrating the process. A second version of the same motif is on permanent loan from the 'Höhere Graphische Bundes-Lehr- und Versuchsanstalt' at the Albertina in Vienna. This object is of great importance not only because of the uniqueness of the motif, but above all because of its relevance to the history of science. We would like to thank Manuel Sigrist, Photo Elysée Lausanne, for valuable information.

Estim. 6 000 - 8 000 EUR

Tue 04 Jun

Albert Renger-Patzsch - Albert Renger-Patzsch The little tree 1929 Vintage, gelatin silver print on Kodak Royal paper. 53.3 x 38 cm (56.5 x 40.6 cm). Mounted under original passepartout, signed in pencil below the image on the right. - In the original frame. Provenance From the photographer to Arno Nowka (advertising manager of the Rheinisch-Westfälisches Kohlesyndikat, Essen), from him to the present owners Literature Hans Windisch, Taking pictures - but with understanding! Ein Wegweiser für Amatöre, die gute Bilder machen wollen ("Neue Reihe", Ullstein-Sonderheft Nr. 9), Berlin 1933, no pp. with illustrations (titled here: Vorfrühling); Albert Renger-Patzsch, Kleines Landschaftsbuch mit einem Geleitwort von Helene Henze, Münster 1947, p. 15 with illustrations; Fritz Kempe, Albert Renger-Patzsch. Der Fotograf der Dinge, exhib. cat. Ruhrland- und Heimatmuseum Essen 1966, plate 9 (here titled: Kirschbäumchen); Albert Renger-Patzsch. Bilder aus der Fotografischen Sammlung und dem Girardet-Foto-Archiv der Ruhr-Universität Bochum im Museum Folkwang, Essen, Essen 1997, p. 85 with illustration; Albert Renger-Patzsch. Joy Before the Object, exhib. cat. J. Paul Getty Museum, Malibu, New York 1993, p. 13 with illus. and illus. on the book title; Ann and Jürgen Wilde/Thomas Weski (eds.), Albert Renger-Patzsch. Masterpieces, Munich 1997, ill. 91 The unusually large format of the present print for Renger-Patzsch suggests that he made it in 1933 during his few months of teaching at the Folkwang School in Essen, where he had the technical means to print on 60 x 50 cm paper. As was customary when he gave photographs as gifts to clients or friends, Renger-Patzsch framed the print under a passe-partout he had cut himself, which he carefully signed in pencil. We would like to thank Jürgen Wilde, Zülpich, for helpful information.

Estim. 40 000 - 50 000 EUR