A developing tank is a light-tight container used for developing film.[1] A developing tank allows photographic film to be developed in a daylight environment. This is necessary because most film is panchromatic and therefore can not be exposed to any light during processing.[2] Depending upon the size and type, a developing tank can hold one to many roll or sheet films. Famous brands include Paterson, Yankee, Jobo and Nikor.
A Paterson System 4 developing tankStainless steel film reel for 35 mm film
A film reel holds roll films in a spiral shape. The film is held evenly spaced so that the chemicals in the developing tank reach all of the film.
Minox daylight developing tankMeopta 16mm development tank
General
General tank support 110,126,135,120,620 format films Developing tanks and film reels for roll films come in two varieties: plastic and stainless steel. With stainless steel reels, the film is clipped to the center and then gently pinched while the reel is turned so that the film falls into the reel's grooves. With a plastic reel, the film is loaded from the outside and then wound onto the reel by rotating the reel with a back-and-forth motion.
Minox daylight development tank. Minox format film can be loaded in broad daylight without the use of a changing bag or darkroom.
Meopta 16mm development tank. Used for 16mm film only. Film must be loaded in darkroom.
Agfa Rondinax 35 and 60. Respectively used for 135 and 120 film formats. Can be loaded in broad daylight without the use of a changing bag or darkroom.
Use
Jobo 16mm/110 dueset plastic reel
The user begins by opening the film canister (in the case of 35 mm film) or separating the film from a paper backing (in the case of medium format film, e.g. 120/220 format). The film is then loaded onto a film reel in a completely dark environment; this can be a light-tight room or a changing bag. Care must be taken during this step, as improperly loading the film may result in parts of the film not getting developed. Once the film is on the reel it is put into the developing tank, and then a lid is placed on the developing tank. Because the lid prevents light from reaching the film, the rest of the film developing process may be carried out in daylight. In addition to protecting the film from light, the lid contains an opening for rapidly pouring liquids into and out of the developing tank. Finally, a separate cap seals the canister, which prevents the contents of the tank from spilling when agitated by inverting the tank. But the tank should be cleaned by water every time after development as any residual fixer may not lead to proper development of the next film.
References
^Anchell, Stephen G. (2020). The film developing cookbook. Bill Troop (2nd ed.). New York. ISBN978-1-315-46845-7. OCLC 1125275035.{{cite book}}: CS1 maint: location missing publisher (link)
^Popular Mechanics. Hearst Magazines. July 1950. p. 194.
External links
Media related to Developing tank at Wikimedia Commons
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developing, tank, developing, tank, light, tight, container, used, developing, film, developing, tank, allows, photographic, film, developed, daylight, environment, this, necessary, because, most, film, panchromatic, therefore, exposed, light, during, processi. A developing tank is a light tight container used for developing film 1 A developing tank allows photographic film to be developed in a daylight environment This is necessary because most film is panchromatic and therefore can not be exposed to any light during processing 2 Depending upon the size and type a developing tank can hold one to many roll or sheet films Famous brands include Paterson Yankee Jobo and Nikor A Paterson System 4 developing tank Stainless steel film reel for 35 mm filmA film reel holds roll films in a spiral shape The film is held evenly spaced so that the chemicals in the developing tank reach all of the film Contents 1 Types 1 1 General 1 2 Special purpose 2 Use 3 References 4 External linksTypes Edit Minox daylight developing tank Meopta 16mm development tankGeneral Edit General tank support 110 126 135 120 620 format films Developing tanks and film reels for roll films come in two varieties plastic and stainless steel With stainless steel reels the film is clipped to the center and then gently pinched while the reel is turned so that the film falls into the reel s grooves With a plastic reel the film is loaded from the outside and then wound onto the reel by rotating the reel with a back and forth motion Special purpose Edit Film reel for 4 x 5 sheet film Minox daylight development tank Minox format film can be loaded in broad daylight without the use of a changing bag or darkroom Meopta 16mm development tank Used for 16mm film only Film must be loaded in darkroom Agfa Rondinax 35 and 60 Respectively used for 135 and 120 film formats Can be loaded in broad daylight without the use of a changing bag or darkroom Use Edit Jobo 16mm 110 dueset plastic reelThe user begins by opening the film canister in the case of 35 mm film or separating the film from a paper backing in the case of medium format film e g 120 220 format The film is then loaded onto a film reel in a completely dark environment this can be a light tight room or a changing bag Care must be taken during this step as improperly loading the film may result in parts of the film not getting developed Once the film is on the reel it is put into the developing tank and then a lid is placed on the developing tank Because the lid prevents light from reaching the film the rest of the film developing process may be carried out in daylight In addition to protecting the film from light the lid contains an opening for rapidly pouring liquids into and out of the developing tank Finally a separate cap seals the canister which prevents the contents of the tank from spilling when agitated by inverting the tank But the tank should be cleaned by water every time after development as any residual fixer may not lead to proper development of the next film References Edit Anchell Stephen G 2020 The film developing cookbook Bill Troop 2nd ed New York ISBN 978 1 315 46845 7 OCLC 1125275035 a href Template Cite book html title Template Cite book cite book a CS1 maint location missing publisher link Popular Mechanics Hearst Magazines July 1950 p 194 External links Edit Media related to Developing tank at Wikimedia Commons This photography related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Developing tank amp oldid 1152538937, wikipedia, wiki, book, books, library,
