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Voigtländer Prominent
Prominent refers to two distinct lines of rangefinder cameras made by Voigtländer. The first Prominent, stylized in all-caps as PROMINENT and also known as the Prominent 6×9 to distinguish it from the later camera line, was a folding, fixed-lens rangefinder camera that used 120 film and was first marketed in 1932. Relatively few were sold and the post-war Prominent, using 135 film, is better known. The second Prominent (stylized with small caps as ) was a line of 35mm interchangeable lens cameras built after World War II in the 1950s, equipped with leaf shutters. The second line of Prominent cameras were marketed as professional system cameras against the Leica threadmount and M bayonet mount and Zeiss Ikon Contax rangefinder camera lines. Voigtländer also sold the Voigtländer Vitessa, Vitessa and Voigtländer Vito, Vito lines of compact 35mm rangefinders contemporaneously, generally equipped with fixed, collapsible normal lenses, as less-expensive alternatives to the Promin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-Gauss Lens
The double Gauss lens is a compound lens used mostly in camera lenses that reduces optical aberrations over a large focal plane. Design The earliest double Gauss lens, patented by Alvan Graham Clark in 1888, consists of two symmetrically-arranged Gauss lenses. Each Gauss lens is a two-element achromatic lens with a positive meniscus lens on the object side and a negative meniscus lens on the image side. In Clark's symmetric arrangement, this makes four elements in four groups: two positive meniscus lenses on the outside with two negative meniscus lenses inside them. The symmetry of the system and the splitting of the optical power into many elements reduces the optical aberrations within the system. There are many variations of the design. Sometimes extra lens elements are added. The basic lens type is one of the most developed and used photographic lenses. The design forms the basis for many camera lenses in use today, especially the wide-aperture standard lenses used with 35 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voigtländer Bessa
Bessa is the best-known line of folding camera, folding viewfinder and rangefinder cameras manufactured by Voigtländer, which was a dual-format camera that took 6×9 and 4.5×6 pictures on medium format 120 film, rollfilm. The Bessa was introduced in 1929 and an improved version incorporating a coupled rangefinder was introduced as the Bessa Rangefinder in 1935; the line was supplemented by the single-format Baby Bessa (aka ''Bessa 46'' and ''Bessa 66''), which took 4.5×6 and 6×6 pictures, respectively. Production was interrupted by World War II; after the war, the Bessa resumed limited production, but was succeeded by the Bessa I and Bessa II (both 1950), the latter including a rangefinder. Similar rollfilm cameras manufactured contemporaneously by Voigtländer included the Petito (1924), Rollfilm (1925), Inos (1931), Jubilar (1931), Prominent (1932), and Perkeo (1950, 6×6). In 1997, the Voigtländer brand was licensed to Cosina, which subsequently introduced an unrelated line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
