Zeiss Ikon Ikomat No. 520 /18 User manual

F





                                 1    Allustration





      1+





          Mike Butkus DigitallyDN:email=mike@butkus.org,Date:cn=Mike2025.03.18signedButkus,by23:20:33Mikeo, ou=Butkus.org,Butkusc=US-04'00'
     *'i'= Press button-for opening the Camera

T    General

                                                                                                                   a    The Ikomat is a Film Camera differing     from the usual type chiefly in the con- --
      struction of the Lens Carrier. It is, in
      reality, a "Self erecting Camera", i. e. in
     opening the Camera with one hand the
    Lens springs at once into position. The
,    operation of lowering the Base board and   "rh      pulling out the Lens Front to the Infinity
     Catch is avoided. The Camera is focussed
     for various distances by simply turning
,    the Lens.
       Before loading the Camera with the
      sensitive Film it is advisable to practise
     the few necessary operations for making
     exposures
   To open the Camera     Holding the Camera in the hand press the  "t
     Spring Button (t) under the Winding Key
       (illus. 1). This releases the Catch of the
 ;   base board; the Front falls and the Lens
    moves automatically into position for ex-
     posure. The Struts (6) on each side of the
:/   bellows are heard to spring into their     catches.
  ,*n         A

Holding the Camera
  while making the Exposure
     Note.                                     --     The position of the Camera as shown
      in  illus. 3 is for making  horizontal
       pictures.
     The Camera is specially constructed,'
    for use as a Hand Camera and principally -A'1    for Snapshots. For this purpose it  is
     fitted with a direct finder (Frame 8 with      1
    Sighter 9 illus.2) which, when not in use,                      i
    lies flat on the Camera. To view the          I
    picture hold the Camera close to the eye           I
    io that the back and front frames of the           I
    finder overlap (illus.3).                                                                                                                 I
     Take care that the vertical and hori-                  i
     zontal lines in the view when photograph- '{
    ing run parallel with the edges of the
    Finder. When the Camera is held, for                                              ^    instance, pointing upwards or downwards,
   you get falling lines,  i. e. buildings, for
    bxample. appear to be leaning backwards
    or forwards.
      Exposures of  longer duration than >{     1/ru sec. must be made with the Carnera 1    fixed to a tripod.  For this purPose it is                                   l    provided with a tripod bush (7). The                                                                                                                          .l{fo             -J

www.butkus.us
    Camera has an English thread \rl<,'li  if,     however, a tripod with continentji screw
       ( lr") in used, an adapter must be attached.
    The Tripod can be screwed directly to the





                                                        :


                           Illustration 4
    Camera Bush (7) for vertical pictures. but
       f"or horizontal exposures a Bafi and SocketK   joint is necessary, with the help of which    ihe       c"mer"                 o'r,'rlJi;:;"i':1l;                           ;:Jrt'":    Horizontal                pictures                        of long e*pos,tre                                             ,^:j         ,1

a
       also be made without tripod by using the
        foot (5) and placing the Camera on a table
      or other firm stand.
    To close the Camera                                                                             ,:'{
      Hold the Camera with both hands (see
        illus.4) and press both struts (6) down-
      wards with the thumbs when the base-
      board easily closes; Lens carrier and
       bellows fold up automatically.
    Loading the Camera
     The film spool to be used in the Ikomat
         520i 18 is Roll Film A8 for eight exposures
        size 2Ll" x l,ls".  As each film section
      2'l,xLuL" shall receive two pictures
        lu/rxLrf n" each number of the film must      appear once in the bottom window and
      once in the top window when changing.
      In this way sixteen pictures LslrxL,ln"
      are ob,tained from a single Film Roll.
       The Camera can be loaded as well as
      unloaded in daylight. The user is thus
      independent of a dark room. Re-loading                                                                     -t      with film, however, should not be done in
       direct sunlight but in shadow or at any
      rate in the shade of one's own body.
                    A)

\o
    By pulling out the catch (3) www.butkus.usthe hinged \
     back of the Camera can be lowered.
      Every new Camera contains an emptyspool
      in ttre upper chamber for receiving the
     exposed film. The core of the spool is
     hoilow at each end for fitting on to the
 T   spring stud of the Camera.
        In order, later on, to insert an emPtY
 I*  spool,againstpressthe springthe endstudwithandthe theroundslottedhole
     end facing the winding key (2) as far as
      possible into the spool chamber and turn
     ihe tey  till  it catches in the spool and
      turns il. The full spool is inserted in the
      lower chamber by first pressing it into the
      spring stud,
       The pointed end of the protecting paper
      must faie the empty spool. After breaking
     the paper sealing band pull the end of
     the protective paper over the two guide
       rblleis and thread it  into the long slot
      of the empty spool. Give the film key a
     few turns till the paper is taut. In doing
      this take care to see that the paper runs
      rtraight and evenly (illus.5). If not run-
      ning straight it must be corrected at once.
                   aPParatus readY close uP;I    To get the      the back, push back the catch (3) and tli
                                                                  l

www.butkus.us


                  ?"


 Illustration 5 Starting the film on the empty spool
the winding key till, first, a hand then the
number 1 appears in the lower window inthe back of the Camera.
.  After paking the first exposure turn thekey slowly tilt the number l appears in the
upper red window. The Film-ii now readvfor the second exposure.                    '  +
                                                                                                                                                                                                                                                      I
  The red windows in the back of ;h;the                           I
             ^A

www.butkus.us



"|-





F'              Illustration 6 Taking out the spool
     highest speed Films can be insertedf     without' fear of fogging.
    Unloading the Camera
      After exposing the last section of- Fifm    I      continue winding off the Film completely'  I
     The protective paper can be seen passing      a"rosi the red windows.windows. ThenThen oPenopen the.I    'l

back of the Camera as alreadv shown.
    Hold the end of the protectiire paper
      tightly with one hand and turn the winding
     key till the paper is completely wound otr.
    Now seal the film with the gummed strip
     provided for the purpose. Take out thb
     spool by pressing  it against the spring
     stud and lift  it out (illus.6).
   The Shutter
    The Shutter is constructed for taking    q
     snapshots of tlrurtf uoandrf ,u sec. and also     time exposures of any length.
    Snapshots                                                                                                                                                                                                                    I
     Set the pointer (a) on one of the engraved
    numbers 25, 50, or 75. One pressure on
     the Release Lever (b) or the Wire Release             !I    which is screwed in the Bush (c) gives
                                                        tf    an exposure of tlru,                             uo or 1/ru sec.
    Short  Time  Exposures
),   Set the pointer (a) on the letter (B). One
     pressure. on the Release Lever (b) or the   Wire Release opens the shutter which X
     closes again as soon as the pressur.e is                )hr,., removed.                                        d
     !2                                             A      Io{
                                                     z. A

www.butkus.us
 Long Time  ExPosures
                                  By  Set-'the pointer (a) on the letter (T).
 preJsingthe Lever (b)-or the.wire release:itreishulter opens and remains open ,tiil
 a sEcond pressure. closes it.





                            +d
 Tphe StoPs
  Tire stops .ire regulated by shifting the                  changes the size of the  nointer (a;. This                               the    {  aperture; itt" larger the stop number
  smal.ler the aPerture.
     Stopping down the
     rt4ge of increasing
       L--t,.                   \'                 ,h"?'"lJ;fffi:1I

t

                                    number.       lgss.            of f!" picture with each stop     Diminishing the aperture naturallv de-
      creases the brightness of the image'pass-
     ing through the Lens. The correct-tim,;
      of exposure with the corresponding stop      is best seen from the exposure table
     accompanying each camera, or with the
     hetp of the Zeiss Ikon Diaphot, a reliable
      optical exposure meter.
   The Focussing Scale
      This. is engraved on the Lens Cell. By
     turning this cell distances from oo (in'-
     !{tV) up to 1m (B Feet) can be focussed.     Distances between those marked on the
     scale can be easily calculated. Exposures
     should not be made closer than f m (a Feet)
     as the perspective values would be distortl
    ed. It is often advisable to know the range
     of sharpness when focussed for a certaJn
     distance and w.ith a given aperture. (See
     table I, page 16.) From this it can alsb be
    seen at what distance the apparatus must
    be focussed in order to phbiograph sub-
     jects possessing great Oepttr oT n'uta, for r
    example, a landscape with foregror.rrrd or
    a large group in which the for.emost per.
      i"                               //1r,
      '--'4*--  '  **r''1' *             A                  u1t

V                                         www.butkus.usu
    sons are ttt!, m (5 Feet) from the appara-
    tus and those at the back 4 m (13 Feet)I    away.
    "-.- tMeoRTANT. Two-point       f ocus.
   ,     In order to have the apparatus always
    set and ready for average pictures the
    following is recommended: StoP F : 11
     distance about 6 m (19r/n Feet),   both of                                       -  shutter   *' these positions are marked on the
   .  with red spots,   and shutter set to l/ru sec.                     -|                         all objects within a dis-   il In this position  ftance of 11/, m (5 Feet) to co (infinity)  -  are sharply enough defined for contact"f    prints and small enlargements, and this                                                 ofJ              is sufficient for snapshots                                        11 a. m.I    winter"*posurescenes in sunlight betweenF-faird 3 p. m. Where much importance  is
 F attached to perfect definition refer to the
ftA  detailed table on page 16.
                  Lensl*iliI'  Use of Portrait
l'    For exposures at less than 1m (31/, Feet)lr   distance a portrait Lens No. 995/11 must      ,,
  flU*  used on the Novar Lens. The figures   I
  !*ir--h--'on th.e focussing scale are of no use with    t           'mbinatioi: the correct value are to -J          t-iaable                               II on pa-ge 16.
                                                                                                                   1.
            '*'* =-.--F..:'                                                                                        i'