Difference between revisions of "Automatic 66"
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| − | The '''Automatic 66''' is an innovative folding camera for 2¼-inch square pictures on [[120 film]], made by [[Agfa]] in 1956.<ref name=McK>{{McKeown12}} p17.</ref> It is a development of the [[Super Isolette]]. It has a coupled rangefinder, and a coupled selenium lightmeter providing [[aperture priority]] automatic exposure by an ingenious part-electrical and part-pneumatic mechanism. The film speed (set on the meter, in the top housing) and aperture controls both adjust variable resistances that bias the meter output. In the user's manual, the meter's linkage to the shutter is compared to a cylinder air pump, with a spring-loaded piston, and a variable-diameter air inlet port.<ref name=CD>[http://www.club-daguerre.de/agfa-automatic-alt.htm Automatic 66] at [http://www.club-daguerre.de Club-Daguerre], including text (in German) quoted from the user's manual.</ref> The meter output determines the size of this air port, and the flow of air through it acts as an escapement mechanism, determining the delay before the shutter closes. The | + | The '''Automatic 66''' is an innovative folding camera for 2¼-inch square pictures on [[120 film]], made by [[Agfa]] in 1956.<ref name=McK>{{McKeown12}} p17.</ref> It is a development of the [[Super Isolette]]. It has a coupled rangefinder, and a coupled selenium lightmeter providing [[aperture priority]] automatic exposure by an ingenious part-electrical and part-pneumatic mechanism. The film speed (set on the meter, in the top housing) and aperture controls both adjust variable resistances that bias the meter output. In the user's manual, the meter's linkage to the shutter is compared to a cylinder air pump, with a spring-loaded piston, and a variable-diameter air inlet port.<ref name=CD>[http://www.club-daguerre.de/agfa-automatic-alt.htm Automatic 66] at [http://www.club-daguerre.de Club-Daguerre], including text (in German) quoted from the user's manual.</ref> The meter output determines the size of this air port, and the flow of air through it acts as an escapement mechanism, determining the delay before the shutter closes. The mechanism is in fact not Agfa's invention: it was the subject of a patent by the Italian firm [[Durst]].<ref>[http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=DE&NR=923525C&KC=C&FT=D&date=19550214&DB=EPODOC&locale=en_EP German patent DE 923525 (C)], lodged 1952 and granted 1954 to Julius & Gilbert Durst; at [http://worldwide.espacenet.com/?locale=en_EP Espacenet], the Patent search facility of the European Patent Office.</ref> |
The lens is a coated 75 mm f/3.5 '''Color-Solinar''', with unit focusing. The shutter is a '''Prontor SVA'''<ref name=McK></ref> ('A' presumably for Automatic) and gives speeds from 1 to 1/300 second, plus 'B' and the automatic 'A' setting. | The lens is a coated 75 mm f/3.5 '''Color-Solinar''', with unit focusing. The shutter is a '''Prontor SVA'''<ref name=McK></ref> ('A' presumably for Automatic) and gives speeds from 1 to 1/300 second, plus 'B' and the automatic 'A' setting. | ||
Revision as of 21:26, 20 November 2011
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| Top housing of the Automatic 66, showing the meter image by Noelas (Image rights) |
The Automatic 66 is an innovative folding camera for 2¼-inch square pictures on 120 film, made by Agfa in 1956.[1] It is a development of the Super Isolette. It has a coupled rangefinder, and a coupled selenium lightmeter providing aperture priority automatic exposure by an ingenious part-electrical and part-pneumatic mechanism. The film speed (set on the meter, in the top housing) and aperture controls both adjust variable resistances that bias the meter output. In the user's manual, the meter's linkage to the shutter is compared to a cylinder air pump, with a spring-loaded piston, and a variable-diameter air inlet port.[2] The meter output determines the size of this air port, and the flow of air through it acts as an escapement mechanism, determining the delay before the shutter closes. The mechanism is in fact not Agfa's invention: it was the subject of a patent by the Italian firm Durst.[3]
The lens is a coated 75 mm f/3.5 Color-Solinar, with unit focusing. The shutter is a Prontor SVA[1] ('A' presumably for Automatic) and gives speeds from 1 to 1/300 second, plus 'B' and the automatic 'A' setting.
The camera has a film advance knob (on the right) and a frame counter (rather than a red window).
The Automatic 66 was expensive, and rather few (less than 5000[2]) were made; it commands high prices.
Notes
- ↑ 1.0 1.1 McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). p17.
- ↑ 2.0 2.1 Automatic 66 at Club-Daguerre, including text (in German) quoted from the user's manual.
- ↑ German patent DE 923525 (C), lodged 1952 and granted 1954 to Julius & Gilbert Durst; at Espacenet, the Patent search facility of the European Patent Office.
Links
- Automatic 66] at Certo6.com.
- Automatic 66 in an auction in September 2006 by Auction Team Breker in Cologne.
