Voigtlander INOS II User manual

the haudling cif the camera; read this
  short and simple booklet with  care
 and you rvill understand how to make
  full use of the mechanical advantages
  given to you, thus you will be certain
  of a picfure from each exposure.





                    l'ig. 2. OPening tbe Inos II
Opening crnd Shutting





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v
       reler€'d  and the base-board can be
        st'ut without further ado (fig.  ). The
     new folding lens carrier remains firm-ly
     anehored on the base-board when the





                     Fig. a.. Closing the base-board

     camera is shut so that damage need
      not be feared.                               .

   Focussing ond  lris dioPhrogm
       The focussing of the INOS II  is a
      completely new departure in camera
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E
        you turn the knob so that the hori-r        If
       zontal 8,    the sign of  infinity      is
       opposite the small arrow head on the
      camera body, with  the  zLI'i'XStlu"
        size, everything will be sharp at full
       aperture that is more than 80 ft. from
       the camera. With  the  2Llr" X 4"1o"
      camera, the sharpness extends from
      93 ft. to infinity. When photographing   J
       nearer objects, the distance must be
      judged (you should practise this) and
       the knob turned until the corresponding
        figure is' opposite the arrow [ead. O-f
      courseyou can adjust this between two
       figures if necessary.
       The Voigtlhnder Anastigmat Lenses,
       Heliar  and Skopar with  which  the
     INOSII is equipped, are so constructed
        that they give at full aperture an abso-
        lutety  sharp image on the  film  of
       every object in  the focussing plane.
         All  the objects to be included in the
        picture  are, horvever, seldom in  the
      same plane.   If   it  is necessary that
       both  near  and  distant  objects are
       sharply defined on the film at the same
        time, we need "Depth of Focus" which
          ,-         and this is true for any lens -  can
       only be achieved by "stopping down".
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For  this  reason there  is  the  Iris
           which  is controlled by the $iaphr.agm.
 lever 19 (fig._6and Z) moviog onei"the
 aperture scale which  is beneath the
 lens on  the Compur Shutter.  The
 smaller the stop number the  larger
 the aperture anA the values are "so
 ct_rosenthat the next smaller opening
always needs double the exposure oi
the one immediately precedin$ it. When
you stop down you increase the ex-
posure necessary so that a compro-
mise must often be arrived at betdeen
these trvo.
    It  is the photographers task to so
adjust the focussing                  -importantand the  Iris  dia-phragq  that                  .-all             objects,"particularly  those  lying  near  the
               within  the  sharp zone.,q.?mera,_are
This problem is simptified by'consul-
ting the depth of fotus tabl6 on the
base-board which is arranged on the
co-ordinate system.  In  the left-hand
vertical column are the distances in
f_eet,and in the top horizontal column
    stop                            If you go along thelh".        _values.horizontal column opiositd a particular
distance until you airive at thb vertical
column below a certain stop value, the

                                            -.,-&ry=                                 "'

? . ' A ' ! r F "
   figures you  find here represent the
  zone of sharpnessin feet that this par-
   ticular focus and stop value give you.

"Close-ups"  wirh  the Focqr.'lens
    The nearest distance at which you
   can normally focus with the INOS II
    is 3,5feet.If you wish to get still nearer
   to  the  subject, thus increasing the
   scaleof the picture, you need do nothing
  more than push a Portrait or Wide-angle
   Focar lens on to the front cell of the
   lens. The portrait Focar lens is  for
   portraits and still life with the objects
   from 40 inches to 20 inohes,whilst the
   wide angle F ocar lens is for objects
   from 20 inches to 13% inehes. so that
    still greater scale pictures can be made
   of  plants, animals and other small
   things.
   When using the F ocar lenses, the
   exposure remains the same as for the
   normal use of the lens under the same
   conditions. The focal length of the lens
    is  just a  little  shortened so that
   without lengthening the extension
   the following close ups are possible.
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The  Portrait Focar Lenses can be
  used at  full  aperture  for  portraits;
   with  the  wide  angtre Focar  Lens,
   however, one is well advised to stop
  down somewhat on  account of  the
   depth  of  focus. The  distance must
  n aturally be very accurately judged, it
    is best to measure the distance from                     {r^
   the  middle  of  the  lens   (Iris  Dia-         {
   phragm). With reference to parallax
   in the finder picture turn  to page 2l
   of this booklet. Close-up Portraits are
   best taken about three-quarters full
   face so that the perspective is more
   natural

Shutter
    The camera is equiPPed with  the
  Embezet or Compur shutters.

Embezet  Shulter
   with  deloyed-qction    (fig.6)
    The length of the exposure is con-
   trolled by the adjusting dial 21 on the
  edge of which the letters ?.      time         {                                -(long   exposures) and B (short time  expo-                                                                                          ItI   sures) also the instantaneous speeds,                                        1
    r2                                                                                                                                                                                                                                                                                            II
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(lroo,  tluo and   rf 2s SeC.) ale  engraved.
The     speeds arg engraved as whole    _
numbers, so that they can be more
easily read.





              Fig. 6.  Embezet Shutter
fnshntaneous Exposures
  By turning  it to the left or right the
dial 21 is so adjusted that the required
speed is exaetly over the pointer. Now
the shutter is ready for the exposure
and can be released either by pressing
the lever 18 or the wire release which
has been screwed in the nipple t,7.
                                                      l3

:UTF

 Time Exposuros
  The dial is turned so that the letter B
 is- over_the pointer. By pressing the
 wire release or the lever 18. the shutter
 is opened and remains open as long as
 the pressure is exercised. If you urish
 to expose for instance three seconds,
 you should count as follows, *One little
 second,Two little seconds,Three little
 seconds". At  one, press the release,
and at the end of "Three little seconds"
 relieve  ;ire pressure.
    If the letter ? is over the pointer, the
 shutter is opened by the  first move-
ment of the lever or wire release. and
is shut by a second pressure on either
of  these. This  position  is used  for
exposuresthat will last for minutes (for
example, Night  Pictures) and when
working  with flashlight.
Delayed-action deviee
  With the instantaneous speeds (1l1oo,tlw, tlzusec.),             the shutter can be made
to release itself automatically through
the delayed-action device, so that you
can photograph yourself.  After  the
exposure has been set to the correct
speed, the lever 20 with red knob  is
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   depressedas far as it will go. you can
   then press the release in-the normal
  way which  starts the  delayed-action
   and the shutter is operated- after an
   interval of ten or eleven seconds.
         lf            delayed-action device is pre-          -tftg   pared for an exposure which for some
   r_easonyou do not wish to make, you
   shogld press the palm  of your hind
   against the front  of the lens mount,
  when  you can release the  shuttei
   without the film being- exposed. The
   delayed-action device shoula not be
    left set.
Compur  Shutter
   with  deloyed-octlon     (fig. Z)
    The shutter  is surrounded by the
   revolving ring 21 on which the letiers ?
   (long time exposure), B  (short tine
   exposure), and the instantaneo,usexpo-
   sures from 1 to llzuosec.are engrav-ed.
  The instantaneous speeds are not en-
  graved as fractions but as whole num-
  bers so that they are easier to reacl.
  fnstantaneous exposures
    By_trgnjng the ring 21 the required
  speed is brought opposite the pbinter
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above the word  "Voigtlander". The
 speedsfrom 1 to Llroosec. are all on the
 same cam so that the shutter can be
 set between any two numbers for
 speeds such as Llruwhich is between

                                               2 0


  17

                                               2 L





               Fig. Z. Compur Shutter
t leoand I I toosec. The shutter must not,
however, be set between Llrooand thd
highestspeed nor between B and 1 sec.
The shutter is  set by pressing the
lever 16 to the right (seen from the
front) as far as it will go. In the ordi-
nary way  it does not matter whether
you set the speed or the tension first.
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-
 It  is, however, better when usine the
 highest speedto set the ring beforl the
 shutter is tensioned,as setting the ring
to this speed after the shutteihas beei
tensioned  is  rather   difficult.  The
shutter can be  released  either  by
pressing the  lever 18  or  the  wire
release screwed into the nipple 1?.
Time exposures
  The shutter must not be tensionedfor
timg exposures,the tensioning lever 16
is locked when the ring  is- set to T
and B and  if   it  is forced the shutter
will be damaged. If the letter B is over
the index the shutter will open when
pressure is exerted on the wire release
or the lever 18 and remain open as
long as the pressure is continued.  If
you wish to expose for instance three
seeonds,             should count as follows,        ,you'One         little second, Two  little seconds,                        *one"Three little  seconds".At       press
the release and at the end of "fhree
little seconds" relieve the pressure.
    If the letter ? is over the pointer, the
shutter is opened by the  first move-
ment of the lever or wire release and
is shut by a second pressure on either
                                                                                   t 7

: u F , % ; f , F
    of  these.  This  position  is  used. for
   exposures that  will  last  for minutes
    (for_example, night pictures) and rvhen
   working with  flashlight.
   Delayeil-action device
        yo" wish to take a photo of your-       -I_f
    self the shutter should first be sei and
   tensioned as above, then the knob 20
   on the top of the shutter should be
   pushed in the direction of the engraved
   arrow when the lever 16 can be moved
   further to the right, thereby tensioning
   the delayed-actiondevice.
    As with an ordinary exposure either
   the lever 18 or the wire release is
   pressed, this sets the delayed-actionin
   motion and the shutter will open after
  an interval  of about 12 seconds. The
   exposurewill be that which is indicated
  on the  ring  above the  index.  The
   d.elayed-actiondeviee cannot be used
   with the highest speeil.
Finders
    The camera is equipped with  two
   different finders which give the correct
   picture for  full  size as well as when
   the small picture insert is being used.
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Frame Finder  (direct vision finder)
 This  consists of  the  actual frame  11
  (fig. 1)  rvith  a black  steel mask  for
 small pietures and the second part with
 a smaller opening whieh is known as
 diopter.   If  the frame  is  lifted bv the
 lip  pointing  towards  the back  oi  the
 cam,erait  will spring up at right angles
 to the side of the cameia and the dlop-
 ter.automatically  assumes the correct
 posrtron.
  When taking  pictures  in normal size
 the steel mask  is sloped towards the
 diopter as seen in fig.8a.  You find the
 corr_ectpicture by looking  through the
small opening of the diopler from such
a distanco that  its sides coincide with
those of the frame  (fig.s).
  When taking small pictures the steel
mask is  lilted and pushed inside the
frame  (fig.8b).  Onli  the sides of the
diopter have to coincide with the sides
of the black  steel mask.  The upper-ind
and- lower  parts  of  the  diopter
steel mask do not coincide. The mask
itself shows the proper picture  limits'rvhen      holding the ey:e in such a posi-
                                                                   t t .

tion that on looking through the diopter
the outer, nickelled, smaller sides are
just seen.
  Even if  it sounds a little complicated
and uncomfortable to work  with  the
frame finder this method has the great
                      t
                            I





          & b

  Fig. 8. How  to look  through^the  frame  finder

advantage that, because the camera is
held at the same height as the eyes,
the  pers'pective of the picture  is the
same  as  that   to  which  we  are
accustomed.
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      As the frame  finder and  brilliant
      finder are of necessity mounted to the
      side of and respectively above the lens,
     t4e picture seen is slightly offset from
      that actually projected on the film when
     the subject is very closeto the camera;                       j                                                                                 l      this is known as "parallax".  This fact
     must be especially considered when
     gsing the portrait or wide angle Focar
     lenses. You see at the side of the frame
      finder away from the camera a  little
    more than aetually comes on the nega-
      tive. The amount that the picture-is                   1/a      offset is about   of its size a[ +0 inches         t/u      to    at 73Llzinches, and it is the same
     with the brilliant finder but in a diago-
     nal direction.  If you focus up a few
     times with the unloaded cameia and a
     piece of ground glass, you  will  soon
     solve all the problems of parallax so
      that you need not give  it undue con-
      sideration.
't'      Brilliant  tr'inder (Reflex Finiler)
       For pictures taken at chest level you
    can use the brilliant finder 10 (fig. 1).
    The picture should be viewed from
    above from about 10 inches and  it  isIt      particularly important that the eye is

                                                                                    . t l

directly over the centre of the finder.
When the camera is held horizontally
the brilliant  finder must be turned  at
right  angles.
  Fig.9 shows how you  distinguish
the edges of the vertical or horizontal





          Yertieal                      llorizontal
           Fig. 9.  Brilliant   finder  pietures
picture.  For  the  practically square
small size pictures you can take the
four points of the mask as giving the
corners of the picture.                                           0'
    It  is easier and more accurate to
work with the VoigtlanderFinder Mag-
nifier No. 6 (only for 2tln" XBL|n" Inos)
which has a specialmask for the small              I\
pictures and at the same time enlarges
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th... iTugg about three times.  If you    '     wiph to have a finder  magnifier "for
     normal size, without the smill  picture
     pTk,you  shorLldorder the Voigt-l;;A;;
      rrnder maqnifier        (Zt1o,7ygr1ni
    ',   J*o.).9I         No.z(z't{'_X+yi;. .1,{.orb i"o6ini"
     Yugoifier              is_so'smatiihai-whenbror"A
         it can.eas3lybe carrieclin the waist_coai
     pocKet.ln use it  is pushedover the
      brilliant finde_rand heid q"it" closeto     th.eeye (fig.12). It canne'iocussedfor    au eyes by moving the nickel tube.
  Holding the comero
                    are to be successful,     __Jf--ry1r1_pielu1es    tne.wayyou hold the camerars rmpor-     tant. As there_is                     alwaysvery niuch                    4ot    time for thoughtbefore an L*poiure, it      is a goodidea-.topractisethe necessary
    movementswith the cameraunloaded,
 ,a     until everything can be done rvithoutj:             wrretie-'                        vir- uiJ'"sing the      l|:lltry,  ,             mash or not has very       i,lll^tr .plgt-n""
If    are      made with  the ;;*;;;lorizonrat;.{'td;i.T  iiil'**+X4""""**r
    and horizontal pictures wiif, tn" camera

vertical that is, exactly opposite to the
normal size pictures.
  The best rmayto hold the cameracan
be seen in fig. 10, 11 and 12. The most
important thing is to hold the camera
stiil, as the slightest shake in the ca-





  Fig.  10.  Yertical   picturo  with  the frame  find'er
                                Amera during exposureresults in double
outlines in the pieture.
  As you are opening the camera and
focussing you should lake uP a firm
 position. When using the frame finder           \
the back of the camerais rested against
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bridge of the nose and the forhead.        !4*
            ff you prefer the brilliant  finder,  the
      camera should be pressed against the
       chest. The camera must  b;  held so
        that the side edges are vertical  other-
      wise everything will be crooked in the




a \





         Fig. 11.  Ilorizontal   picture  with  the frame find,er
i't      pictur.e,further, when buildings are in
          picture, the cameramust never be        l|g
       trlted. upwards or downwards, as this
       will result in all the vertical lines run-      ning together.
      The  shutter  is  most comfortably
     released with the thumb on the lever

'(fig.13     10,11) you must holvever -  as
                 -  find the release positionwith a rifle
and then press smoothly without a ierk.
If you find that you are moving the ea'
mera when releasing with  this lever,





                         Fig. 12
 Picture  with   brilliant   finder  and  find.er magnifier

you hat better use the wire release
 (fig. 12) which should be held, in a
gentle curve so that the movement of
the hand  is not transferred  to the
e.amera.
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