Early Gevaert Colour
▻https://www.photomemorabilia.co.uk/Colour_Darkroom/Early_Gevaert.html
GEVAERT
Gevaert Ltd. was founded in 1894, when Lieven Gevaert started to make photographic printing papers at Anselmo street, Antwerp, Belgium. A year later, 1895, a public company was formed – Gevaert Limited, and in the same year a factory was built on some land near Mortsel to manufacture films, photographic glass plates, and printing papers.
’Popular Photography’ magazine for Spring 1988, in its editorial column, suggested the correct proununciation of the Flemish gentleman’s name who founded the Belgian comany ’Gevaert’ was ’Gay-vaart’.
An earlier pronunciation suggestion, within a Gevaert advertisement on page 89 of ’Popular Photography’ magazine, April 1938 is, “Picture takers all over the world say ’Gay-vert’ (Gayvert) and know that the film they buy is made for just one thing - ’perfect pictures’. Start now to make all your pictures perfect - use Gevaert Panchromosa - in both Roll Films and Film Packs - fits all cameras”.
“Photography is easy and perfect the Gevaert way”. The Gevaert Company of America Inc; 423 West 55th Street, New York (branches in Boston, Chicago, Los Angeles, San Francisco, Toronto, Montreal, Winnipeg).
Gevacolor Transparency Films
Gevaert of Belgium introduced Gevacolor Reversal film for transparencies in 1947. It was first available in 35mm film, 20 exposure cassettes, one type balanced for daylight exposures and an artificial light type for use under 3200°K lamps. Both types of film were sold as “Process Paid”, and were returned to Gevaert for processing. The artificial light film was also sold in sheet film format in various sizes.
In 1948, the daylight type film was also obtainable in 120, and possibly 620 size, roll film, also Process Paid. The British Journal of Photography Almanac (BJPA) for 1948 devotes three pages to the two films, and includes a processing table, though the various chemical baths are only specified by a ’G’ number, i.e. G.1 = 1st Development through to G.7 = Fixing. The total time was 87minutes, not including drying. C. Leslie Thomson published successful formulae and a processing table for Gevacolor films in a supplementary leaflet enclosed in his book “Colour Transparencies”, first published in 1948.
The BJPA for 1950 reported that on 15th March 1949, Mr. J. Bracey Gibbon of Gevaert had showed examples of the, then, new Gevacolor film to members of the Royal Photographic Society and had described the processing procedure. At this time the film was still not available for sale in the UK.
Processing Sequence for Gevacolor Reversal Film; March 1949
Agfacolor
▻https://de.wikipedia.org/wiki/Agfa_Agfacolor
Nach der Veröffentlichung der Agfacolor-Rezepte und der zwangsweisen Freigabe des Agfacolor-Verfahrens im Jahre 1945 produzierten mehrere Hersteller (Adox, Ferrania, Fuji, Gevaert, Konishiroku (heute Konica), Tellko, Valca) derartige Filme und Fotopapiere, wobei die Entwicklungsverfahren jedoch je nach Hersteller unterschiedlich waren. Ab 1978, beginnend mit dem hochempfindlichen Negativfilm Agfacolor CNS 400, stellte Agfa-Gevaert auf die Kodak-Chemie (ölgeschützte, wasserunlösliche Farbkuppler) um, damit waren Agfa- und Kodak-Farbfilme in denselben Entwicklungsprozessen zu verarbeiten, dem bis heute bestehenden C-41 für Negative oder E-6 für Dias.
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Zu den letzten Produkten gehörten:
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Der Farbumkehrfilm RSX-II. Wird heute noch von der belgischen Agfa-Gaevert als professioneller Luftbildfilm Aviphot produziert, der unter der Marke Rollei mit dem Namen Digibase verkauft wird.
Tutorial: Rollei C41 Digibase – Color Film Development · Lomography
▻https://www.lomography.com/magazine/236651-tutorial-rollei-c41-digibase-color-film-development
The Rollei C41 Digibase Kit is a great solution for inexperienced Lomographers wanting to develop their own color film. Unlike many other kits this one works at lower temperatures. It has allowed me to successfully develop color negative film, redscale film, and even cross-process slide film, all on the first go.