Beseler Topcon B booklet Product booklet

>                                 THE BESELER-TOPCON  is equipped with a bayonet lens mount.
                                                Attaching any of the superb TOPCOR lenses to the camera body
                                                     requires only a quarter-turn clockwise  until the lens clicks posi-
                                                           tively and securely into position. Matching red dots on camera
                                        and lens mount make instant fitting easy. A safety catch must
                                           be released before the lens is removed with a counter-clockwise
                                                                    tu rn.
                                            Lens openings, focusing distances and depth-of-field scale are
                                                  clearly marked in light figures on the contrasting black lens
                                                     barrels. An internal thread inside.the front of the lens barrel
                                                 accepts screw-in filters.    \?

Mike Butkus  DigitallyDN:org,Date:cn=Mikeemail=mike@butkus.org,2026.01.13signedButkus,by16:21:15Mikeo, ou=Butkus.Butkus-05'00'c=US





   AUTO-TOPCOR 35mm t2.8 WIDE ANGLE         AUTO-TOPCOR 58mm f1.8 STANDARD
     Number 0f Elements: 7 Angle 0l Viey{: 65'                              l'lumher of Elements: 6
        Magnification  Factor: 0.62x of 58mm Lens                            Angle of view: 41 "
            Aperture Markings: f2.8, 4, 5.6, 8,                       Aperture Markings: fl.8, 2, 2.8, 4, 5.6, 8,
                 11, 16, 22 and half-stops                                     11, 16, 22 and half-stops
             0iaphragm Sontrol: Automatic                          Diaphragm Control: Automatic
           tocusing Range: 0.8 ft. to intinity                        focusing Range: 1.45  ft. to infinity
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C(lPYII{G STAND                 BETI.()WS ATTACHMEI{I         TXIENSION TUBES               Y.T()RK CA8I.E RITEASE
Securely holds the BESELER-    Most flexible of all tools for    For micro- and macro-photog-    For use with all Automi
TOPC0N centered above the     close-up photography. Contin'    raphy. Three different  sizes,   ToPCoR lenses and ex1
subject, as close as 1.6 ft.    uous, smooth rack and pinion    used separately or in combi-    sion tubes or bellows.
and covering areas as small     focusing. Exposure factors for   nation, providing varlous    tip screws into the    I
as 5r/2" x 8-3116" with   58mm and 100mm lenses are   degrees of magnification.    diaphragm release, the ot
58mm lens on camera. A valu-    marked on track. Accepts  all   May be used with camera on    into the camera. Pressure
able aid for copying maps,   T0PCOR lenses.              a copying stand or tripod.       the cable release Jirst st
documents, catalogs.  Supplied                                                                         dou/n the lens, then trips
with polished wood case.                                                                                    shutter.

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