Bronica EC film back User manual

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(1) Bronica EC Film Back

The Bronica EC Film Back is the film cham'
ber of the Bronica EC and it complements
the complete system versatility advantages of
this truly professional instrument. Bronica
EC Film Backs can be freely interchanged by
the photographer to enable switchover atany
point during photography, including mid-roll.
This versatility and convenience is an inhe-
rent performance characteristic of all Bronica
cameras. lt must be pointed out that the EC
Film Back is not only a film chamber with
respect to function and operation, but is a
unit that has its own intricate mechanisms
which make it a high-performance  camera
integral.

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(  a. Attaching Film Back
    To attach the Film Back to the camera body, place
     the bottom of the film back on the open hinge on the
     camera bottom and push the back forward, attaching
     back and body.After attachment of back and camera,
     the dark slide can be removed.
    lmportant: After attachment of the back and body, the
      shutter cannot be released unless the dark slide is remo-
    ved. Therefore, when you are ready to begin picture
     taking after attaching the Film Back to the Camera,do
     not neglect removal of the dark slide from the dark slide
        slit and insertion into the dark slide pocket, Always make
       it a point never to carry the camera, slung over the
     shoulder by neck strap or otherwise, with the dark slide
      inserted into the dark slide slit as there is the possibility
     of the Film Back falling from the camera. With the dark
      slide inserted in the dark slide slit, the camera and Film
     Back are in a "ready to be detached state," which makes
      carrying in this state unadvisable.

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   b. Removing Film Back{
    To remove the Film Back, remove the dark slide from
    the dark slide pocket and insert it into the dark slide
       slit, as shown in the photograph. In inserting the dark
     slide into the dark slide slit, push it in all the way in
     until it stops, at which time the Film Back will be
     released automatically from the top of the camera.
    lmportant: lf Film Back attachment is not correct,
     the dark slide cannot be removed from the dark slide
       slit. Always make sure during attachment, that a 100
     percent attached state exists.

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{ a. Opening the Back Cover of the Film Back
    To open the back cover, press the back
     cover safety lock and push the back cover
    opening button, as shown in the photo-
     graph.
    lmportant: In opening the back cover,
    always press the back cover safety lock
      first. lf these buttons are depressed in the
     reverse order. the back cover cannot be
     opened.                     o
{ b. Opening the Back Cover Reveals the Film
     Holder Insert
     In the middle of the film holder insert are
    two knob studs, as shown in the photo.
    graph. Pressing these inward at the same
    time by finger, releases the lock and enab-
     les the film holder insert to be removed
    from the film back.

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                 Holders{ c. Film Insert
    The bottom holder within the insert is for the fresh
     film spool and the top for the empty film spool. The
     holder has a spring pressure plate on one side. The
     fresh film spool is inserted agdinst the pressure plate
     side first, pushed outward for clearance, and then
    pushed inward and onto the holder.



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   d. After loading fresh film on the bottom holder within{
     the insert, draw out the leader paper, as shown in the
     photograph,bringit acrossthe outside of the film pres-
    sure plate, and insert the end into the film take'up spool.
    lmportant When loading film, the back side of the
     leader paper must face out, never in. lf the latter is
     the case, remove the fresh film spool from the holder,
      reverse the ends, and replace the film again.

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{  e. With Film Loading Completed, Press the Two Knob
    Studs Inward Again, and Replace the Insert into the
     Film Back
    When replacing the film holder insert, slide the spring
      loaded knob studs, retracted when the center knobs
     are pressed in,on both the right and left side of the
      insert body into the guides on the right and left of
     the film back body interior. lf insertion is correct,  it
      is verified by the center knob studs when they are
      released. They will return immediately to their original
      position, centered exactly with the white line markers
    on the center knob shaft.
    lmportant: When the center knob studs do not re-
     turn to the correct, centered position, winding gears
      will not engage properly, and re-insertion is necessary    @
     to insure correct film advance.
{  f. Aligning Film Start Mark and Red Dot
    Wind the film shutter knob/crank on the camera to
     advance the film to the start mark, and align the film
     start mark with the red dot on the film holder insert.
    As soon the film start mark and red dot are aligned,
     discontinue winding of the film shutter knob/crank.
    lmportant:  lf the leader paper is not taken up when
    the film shutter knob,/crank  is wound, the film holder
     insert is incorrectly positioned within the Film Back or
    the Film Back multiple exposure lever is set to the
     multiple exposure position.

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     1g. Closing the Back Cover
         As shown in the photograph, pressing the
          I         upper part of the back cover against the  I
          camera body causes the two to "click-lock"
   I          together, completing film loading.
  I         lmportant: lf the film holder insert is not
                                                  Back,I'l          inserted correctly within the Film
         I         the back cover cannot be closed.


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    < h. Making 12 or 24 Exposure Setting
        Upon completion of film loading, set the
            selector dial for L2/24 exposure to either
         12 or 24 depending on the type of film
           loaded in the Film Back. To turn the se-
              lector dial, press it in the center and align
          the white dot with the number corre-
          sponding to film type, either L2 or 24.

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{   i. Advancing the Film to the First Exposure
    To advance the film to the first exposure, turn the
     manual film winder on the film back in the direction
     of arrow indication until "1" is registered in the expo-
     sure counter. Exposure counter advance will stop once
     "1" is registered ; two or three additional turns of the
     manual film winder are recommended, however; nei-
     ther film advance nor counter advance will occur. This
     completes pre-photography preparation, and photog-
     raphy can begin whenever the Film Back is attached
     to the camera body.
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< j. Film Type Awareness at All Times
     After loading the film, tear off the end flap of the
    empty film box and slip it into the film type indicator
     frame. This will keep the photographer aware of the
     exact type of film loaded in a back. This is an espe-
       cially effective way of keeping aware of film type when
     using more than two film backs.

Film Back Accessories
                 Hard leather case
                 Spare dark slide
                 Spare film insert
                Case for 1 spare film insert
                Case for 3 spare film inserts




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  ZEN ZA BRONICA INDUSTRIES, INC.

     25, 2-chome, Minami-Tokiwadai,  ltabashi-ku, Tokyo, Japan
     Cable Address: BRONICA TOKYO
              Telex: 272-2393
         Telephone  : 958-0116/8, 956-3101