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Shortly after this sadly decision the automatic diaphragm became very popular with the 35 mm cameras.The main reason to choose for such a camera was the fact that large format hand held photography was possible while watching the subject. The revolving back enables landscape as well as portrait mode just by turning the revolving back including the film holder or film pack.

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The improved shutter would permit high speed synchronization with long peak bulbs, such as the #31 and Sylvania 2 A bulbs at 1/200= 1/400 and 1/1000.

The 34" Super D with 152 mm f=4,5 Ektar in semi automatic diaphragm was like the 45" especially designed for the professional photographer.

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This is the basic principle of the operation of each Graflex camera model.

The 4 x 5 inch Super D was manufactured from 1948 up till 1958 basically equipped with the semi automatic diaphragm 152 mm Kodak Ektar lens or the Kodak Ektar 190 mm - f=5,6.It is said that the automatic diaphragm was invented and patented by a Chicago photographer Torkel Korlin (1903-1998).The Super D sales did not came up to expectations, reason why Korling decided not to renewal the patent.Emergence of Advertising in America: 1850-1920 Over 3,300 advertising items and publications dating from 1850 to 1920, illustrating the rise of consumer culture and the birth of a professionalized advertising industry in the...Usamos cookies para personalizar el contenido, adaptar y evaluar los anuncios, y ofrecer una experiencia más segura.Graflex Cameras, such as the Graflex Junior and the Revolving Back Series B are basically the same and are operated in the same way .

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