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Sinaron Digital Lens- Ture (DB) Is the Standard Mount for All Sinaron Lenses

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Sinaron Digital Lens- Ture (DB) Is the Standard Mount for All Sinaron Lenses Lenses Sharp Eyes for Large Format Photography The lens is a primary link in the quality • Sinaron-S Lenses: Standard lenses lengths of 65, 75 and 90 mm have a maxi- chain that begins with the initial conception that feature an enlarged image circle with mum aperture of f/4.5. They produce a very and ends with the printed page. Sinar sup- an angle of view of 72°, which allows bright focusing image with uniform illumi- plies lenses under its own trademark greater freedom for camera adjustments nation all the way into the corners. Sinaron that are designed specifically for than conventional normal focal lengths that its camera system and manufactured by have an angle of view of only 53°. • Sinaron-WE Lenses: These eight-ele- the Rodenstock Precision Optics Works. ment lenses with extremely short focal These lenses are subjected to strict in- • Sinaron-SE Lenses: This design repre- lengths have a picture angle of 110° at f/16 spection controls at Sinar and then mount- sents state of the art technology, incorpor- and they are available in DB Auto Aperture ed with exacting care on lens boards, either ating significant improvements over earlier Mounts and also with a recessed plate and with between-the-lens shutters, or with comparable lens types in terms of image a Copal between-the-lens shutter. As is the automatic aperture control for the DB ver- quality, especially in the close-up range. case with Sinaron-SE lenses, their apoc- sion of behind-the-lens shutters. Stray light within the lens amounts to less hromatic correction ensures the highest In lenses for 35 mm and for medium format than one percent, producing better contrast imaging quality across the entire image cir- photography, aperture is often regarded as in the images. The angle of view subtend- cle. Sinaron-WE lenses are available with a primary criterion, but in lenses for large ed by its image circle was increased to 75°. focal lengths of 45 and 55 mm, with a max- format photography it is more the image Color correction was improved still further imum aperture of f/4.5. circle on the focusing screen and the angle by the use of ED glass types. subtended by that image circle that mat- • Apo-Sinaron Lenses: When objects ters. The larger that circle, the greater the • Sinaron-W Lenses: Professional lenses are to be reproduced in actual size, the freedom for camera adjustments. This be- with an especially large image circle or Apo-Sinaron lenses are recommended for comes a decisive factor especially for the angle of view of 100°. The six-element de- the best performance. Apo-Sinaron lenses larger camera formats. The Sinar assort- signs with focal lengths of 90, 115, 155 and are available with focal lengths of 240, 300, ment of lenses includes the following types 200 mm have a maximum aperture of f/6.8, 360, 480 and 600 mm, all with a maximum of lenses: and the eight-element designs with focal aperture of f/9. Sinaron-S Sinaron-SE Sinaron-W 4-1 Lenses • Macro-Sinaron Lens- with Copal between-the- es: The primary concern lens shutters: The shut- in close-up photography is ter and the aperture not the image circle or an- have to be opened man- gle of view, but image ually for focusing. Just quality.The 180 mm Macro- before the exposure is Sinaron lens is optimally made, the shutter and corrected for reproduction the aperture have to be ratios ranging from 2:1 to closed again by hand, 1:5. the shutter has to be Sinaron lenses are available in various versions and focal lengths. Auto Aper- cocked and the shutter • Sinaron Digital Lens- ture (DB) is the standard mount for all Sinaron lenses. speed has to be set. es: Digital photography Now everything is ready with CCD area sensors requires special manual aperture settings for f-stops smaller for the actual exposure to be made. For lenses that are designed for optimal per- than f/45. Existing lenses can be fitted with checking the focus between exposures, the formance, in terms of focal lengths and res- Auto Aperture Mount DBM by means of the shutter and the aperture have to be opened olution, with the small image format with a appropriate conversion kit. and closed manually. diagonal in the range of 35 to 55 mm. In order not to restrict camera adjustment • Auto Aperture Mount Special DBS: The procedure is different with lenses in capabilities, these lenses are mounted on Preserves complete wide angle camera ad- (DB) auto-aperture mounts. Thanks to the the back of the lens standard, inside of the justment capabilities, especially with the automatic aperture and film holder features camera bellows. Expolux Shutter. Precludes any danger of of Sinar behind-the-lens shutters (also see vignetting by the shutter with 155 and 200 Chapter 5) the intermediate shutter manip- Lenses supplied by Sinar are available mm Sinaron-W lenses and with 165 and ulations are eliminated. The working aper- in four different mounts. Auto Aperture 210 mm Super Angulon lenses. Existing ture and the shutter speed are set at the Mounts DB, DBM and DBS offer the great- lenses can be fitted with Auto Aperture beginning and the camera does the rest. est ease of operation because of automatic Mount DBS at the Sinar factory. The photographer is free to devote his full aperture control, while Copal between-the- attention to the subject. lens shutters are cost-efficient entry solu- • Copal between-the-lens Shutter: Of tions on which all settings are manual. course, Sinaron lenses can also be fitted The quality chain – from camera to lens, fil- with Copal between-the-lens shutters. It ters, stray light protection, film holders, all • Auto Aperture Mount DB: Most conve- should be remembered, however, that the way to the film itself – is only as strong nient to operate, with automatic aperture every shutter functions within certain indi- as its proverbial weakest link. Sinar has al- control up to f/128 with the Sinar Expolux vidual tolerances, which can manifest ways strived to eradicate the weakest Shutter, and up to f/45 with the Sinar Auto themselves as exposure variations in criti- spots. Not only were all Sinar products rig- Aperture Shutter. Existing lenses can be cal photographic situations when lenses orously reviewed to that effect, but stricter fitted with Auto Aperture Mount DB by are changed. One also has to do without demands were also placed on suppliers of means of the appropriate conversion kit. the operating convenience provided by components. In recent years, advances in Auto Aperture Mount DB is the standard Sinar behind-the-lens shutters. computerized lens design using new types mount for all Sinaron lenses. of optical glass and in multiple coating Full concentration on the photograph: techniques have led to significant improve- • Auto Aperture Mount DBM: In addition The following procedure has to be ob- ments in the quality of lenses. to its automatic function, this mount has served when working with lenses equipped Sinaron-WE APO-Sinaron Macro-Sinaron 4-2 Lenses SINARON LENSES IN Lenses fitted with Auto Aperture Mounts AUTO APERTURE MOUNTS (DB) (DB) with automatic aperture control. The ON LENS BOARDS aperture is controlled automatically by 446.85. ... behind-the-lens shutters Sinar Expolux 522.21.001, Sinar Auto Aperture 521.31 and Sinar Digital 522.11. This does away with time-consuming manual settings. AUTO APERTURE MOUNT (DB) For do-it-yourself fitting of an existing lens CONVERSION KIT with Auto Aperture Mount DB. Supplied ON LENS BOARD complete with assembly instructions. 446.75. ... • When ordering, please provide accu- rate information about the brand, type, focal length and mount of the lens that is to be converted. SINARON LENSES IN Same as 446.85. ..., but with added man- AUTO APERTURE MOUNTS ual override (especially with apertures WITH MANUAL OVERRIDE (DBM) smaller than f/45 with the mechanical be- ON LENS BOARDS hind-the-lens shutter Sinar Auto Aperture 446.86. ... Shutter 521.31). • Not necessary for Sinar Expolux Shutter 522.21.001, because this shutter automatically sets apertures all the way down to f/128 (depending on the particu- lar lens being used). AUTO APERTURE MOUNT WITH For do-it-yourself fitting of an existing lens MANUAL OVERRIDE (DBM) CON- with an Auto Aperture Mount with Manual VERSION KIT ON LENS BOARD Override DBM that also works for aper- 446.76. ... tures smaller than f/45 with the mechan- ical behind-the-lens shutter Sinar Auto Aperture Shutter 521.31. Supplied complete with assembly instruc- tions. • Not necessary for Sinar Expolux Shutter 522.21.001, because this shutter automatically sets apertures all the way down to f/128 (depending on the particu- lar lens being used). • When ordering, please provide accu- rate information about the brand, type, focal length and mount of the lens that is to be converted. SINARON LENSES IN SPECIAL Lenses fitted with Special Auto Aperture AUTO APERTURE MOUNTS (DBS) (DBS) Mounts and Conversion Kit for ON LENS BOARDS existing lenses, respectively. 446.81. ... Permits the use of Sinar Expolux Shutter as a between-the-lens shutter. Prevents SPECIAL AUTO APERTURE vignetting of large image circles with short MOUNT (DBS) CONVERSION KIT focal lengths. ON LENS BOARD The two parts of the DBS board are joined 446.71. ... by a hinge. The lens standard with the shutter is placed between the two parts. Shortest exposure time: 1/8 sec. (except for 210 mm f/8 Super Angulon: 1/500 sec.) This Special Auto Aperture Mount (DBS) is suitable for the following lenses: 200 mm f/6.8 Sinaron-W 155 mm f/6.8 Sinaron-W 165 mm f/8 Super Angulon 210 mm f/8 Super Angulon Technical details and order numbers • Conversions and calibrations to be per- for Sinaron lenses are listed in the formed at the Sinar factory in Switzerland.
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