Bronica ETRSi Auto Ext Tube E User manual

The Automatic Extension Tube-E has been                                                                              Finally, for greater pleasure and freedom from      developed for the purpose of providing greater                                                                 troublesome exposure calculations, the use of       lens extensions than possible with the unaided                                                                           the AE Finder-EII is recommended because com-
      Zenzanon E/PE lenses (from 40 mm to 250 mm                plete exposure automation is retained even
       focal lengths), without loss of the automatic               when the automatic extension tube is used.
        lens diaphragm and electronic shutter actions in                  Please read the instructions through completely
       the lenses. Thus, operations are identical to that                 before you use the accessory, as you will then      without the automatic extension tube which                                                           be able to use the accessory with greater ease     means that operations are very simple and                and more satisfaction.
       trouble-free even when the accessory is used
      between Zenzanon lens and ETR/ETRS/ETRSi.
      Three automatic extension tubes are available,
      with extensions of 14mm, 28mm and 42mm
      which are designated E-14, E-28 and E-42. For
       extensions greater than 42mm, the use of the
      Automatic Bellows Attachment-E is recom-
      mended because it can provide greater, variable                lmportant
        lens extension.
                                                                  Tho autometac oxtonsion tubeE can only be used singly.
                                                        Do not connoct the automatic axtonsion tub6 to sach other.
@                                                                            @
                                              donated to www.butkus.us

Nomenclature....
                                                                     Front surface                Rear surface
       Attachment of Lens to Automatic                             (Lens side)                (Body side)           Extension Tube  .                   6
       Attachment to the Body                 8
       Detachment from the Body   .           10
       Detachment of Lens from Automatic
           Extension Tube  .                      11
       Care and Maintenance                   13
        Pointers for Close-Up Photography        14
       Formulas for Macrophotography         16
       Close-Up Working Datas  .               18




G)                                                                         o

Digitally signed by Mike Butkus
                                                                                                                                                                                                                                                                                                               DN: cn=Mike Butkus, o=Butkus camera manuals,
                                                                                                                                                                                                                                                                                                                                                  ou=butkus.org, email=mike@butkus.org, c=US                                                         Mike Butkus    Date: 2023.09.16 13:21:28 -04'00'
        verse the lens back to     (1)The lens connected to                     shutter. Next. line up     Preparations for  taking
      the red dot position      the automatic exten-               the red dots on the    pictures are  completed     and then revolve  it       sion tube cannot be                 body and the automatic     with the above.
       once more until it locks        attached to the body                   extension tube. Then,
        securely which can be         (or detached from the                         insert the automatic ex-
      confirmed by   the       body) unless the shut-                    tension tube fully into
       height of the locking         ter is cocked, as in the                   the body mount. When
         pin.                     case for  attachment/                   well seated, rotate in
                               removal of the lens                the  counter-clockwise    *   lt will not be possible       only (see page 22 ol                      fully until it stops. An
        to attach the automatic        the instructions for the                    audible click should be
        extension tube to the        ETRSi)                               heard which will indi-
      body if the locking pin        ln other words,  f irst,                    cate that the accessory
        does not retract-                 rotate the film winding                       is securely locked into
@                                   crank and cock the lens                        place.                            o
                                               donated to www.butkus.us

(1)The combination of        ter. Next, depress the             (1)The cocking pins on      {2} Next, depress the lens
        lens and automatic ex-      lens release button.               the automatic exten-        release button on the         tension tube must, first,          Finally, rotate the auto-                     sion tube will be shifted       accessory and rotate
      be detached from the        matic extension tube in                    slightly in the direc-       the lens in the clock-
        body.                         the clockwise direction,                 tion of release, when      wise direction (while     * Do not detach the lens       while keeping the but-                 the lens and accessory       maintaining pressure
       from the automatic ex-      ton depressed at the               combination is   de-     on the button). When      tension tube   first.       same time, until a full                  tached from the body.      a full stop is made, the
                                  stop is made at which                 Therefore, shift  the         lens can be detached.
        Therefore,  first, rotate       point the lens can be                 cocking pins to coin-
        the film winding crank        detached.                           cide with the green-
       and cock the lens shut-                                                 colored dot. as initially
                                                   done before attach-
                                                                               ment.
@                                                                                                                                                               (D

(1) Focusing with the split-     (3)When using the 40mm                 crease the depth of       photographer and/or
       image or  microprism        and 50mm focal length                                              f ield.                       camera and that special
      spot may be found        lenses, it  should be               And, naturally, a slow        care must be exercised
         rather difficult in close-        noted that there will be                  shutter speed will be        for properly illuminat-
       up shooting because of       certain magnifications                the rule, in this case.         ing the subject. A lens
        a decrease in the actual        and/or exposure.factors                   Therefore, use a strong,         of a longer focal length
         brightness through the       between the E-14 and                  rugged tripod for hold-       can be utilized, in this
        lens, as will be ex-         E-28 tubes and between                 lng the camera set-up.        case, as it will perm[t         plained later. Therefore,         the E-28 and E-42 tubes                 in order to eliminate        the photographer and/
        in such cases, focus      which it  will not be               camera vibration and,       or camera to be posi-
       with the matte screen         possible to use, because                  at the same time, use a        tioned at a greater dis-
          area.                          of the limitations in the                   cable release as much as        tance from the subject
     Or  focusing screens      amount of  extension                       possible.                and the illumination.
       with a central matte          possible with the helical              At the same time, it      On the other hand, of
         area, such as the matte       focusing systems of                   should be noted that in        course, the depth of
        focusing Screen-E or         these two lenses.                           close-up shooting, there          field will be even more
        Grid Focusing Screen-E                                                            is danger of a shadow        shallow which will re-
         should be used.            (4)The depth of field will                  being case on the sub-         quire even more care in
                             become more shallow                 iect matter by  the          focusing.
       (2) When using the 250 mm       as the magnification  is
         focal length lens, there        increased in  close-up
      may be some darkening       shooting. Therefore,        in the corners of the       focus as carefully as
       frame area, of about        possible and, at the
         2 mm or so-               same time, stop down
                              the lens as much as
                                           possible in order to in-
@                                                                             @

ZENZABRONICA
Exported bY:
          CO., LTD.TAMRON                               Kita-ku' Tokvo 114 Japan ,t7-,i. z-"hor", Takinogawa,
 ilnone, tOStSet O-0131 Fax: (03)39 l6-1860
 Manufactured bY:
           CO., LTD.BRONICA                               Toda-shi' Saitama-Pref 335' Japan Ii'in"r"       eiiogi-Hisa3hi,
                 donated to www.butkus.us