Zeiss Ikon Tenax 1x1 User manual

Ii\STRUCTION
                    for usins the
TEI\AX lxl"
                    (z+ x 24 rnm,)
     with instant winding mechanism for

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                                                    . YEB . DRESDEN A 21MECIIANIK . ZBISS IKON

The Pocket Tenax, or Tenax I, is a miniature eamer& for perforated
35 mmfilm taking cartridgcs for black and u,hite and color fiim. The
standard 35 mm cartridge in the Tenax yields 50 square exposures
lxI"  (24x24 mm). Any cut lenght of 35 mm film can also be used.
The extensive depth-of-field in the short focus lens renders quick
srnp-shooting possible. A pressure of the finger suffices to set the
shutter and advance the film to the next picture, rvithout removing
the camera from the eye. I)ouble and blank exposures are impossible.
The camera is equipped with an automatic picture counter and a
Iarge optical direct-vision view finder. Film loading is greatly faci-
litated owing to the removable c&mer& back. Red-dot focusing and
tlcpth-of-focus  scale help to optain successful results also. It is under
all circumstances advisable to practise using the camera over and
over again without a film in it, before actually making expcsures.
The single manipulations should be carried out iu the follorving
succession.
I. Landing the Fi,Irn                                ilq
l. Set the shuttor by means of the lcver (l)to number 100 = 1i l00th
   second. (Any other spced except l/500th second and B can also
  be chosen, but l/100th second is generally to be preferrcd).
2. The shutter is ryound up by depressirg the tension lever (7). S*'ing
   forward the hinged top until it stops hard. The tension lever will
   automatically jurnp back, u'hereby the flnger should remain lightly
   resting on it. If the tension lever (7) is not pressed dorvn properly
   untilitstops it rvill not return to its starting point but will rerriain
  inan in-between position, from rvhich it must not be pushecl up
   rvithforce, as this rvould damage thespringmechanism. ft n'ill have
   to be pressed don'n again to the stop, from v'here it springs back
   automatically to its original position.
3. Turn the millcd knob (14) in the bottom of the camera 900 until
   the engraved arrorv points to the 'oA" and then push the hnob
   torvards the "A". The camera back is now unlocked. Pull the
   camer& back awav and take it off.
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                                                                   sPeed: Speed-setting lever             9 = Window showing the
-= Shutter-release leverr                   .    setting                               10 : Index pointer showing the
: Film counting dial                    distance setting
: Rewind. release-knob            11 : Outer lens ring with distance
: Rear aperature of oPtical fincler          scale                                 12 :  Inner, miller-l lens ringwith in-
-= Optical finder                       dex dot for diaPhragm setting
: Lever for winding the shutter    13 : Diaphragm scale
: Rewinding knob               20 : Flash contact

4. Take the empty spcol (receiving spool) out of the right-hand spool
    bed, at the same time p:essirg thc spool holdirg sprirg (18) side-
   ways to allow the spool to slip out. Before loadirg the film take
    care that the pressure plate in the c&mer& back, and the imer
     " chambers of the eamer& are clean in order to avoid scratching
   the film. Specks of dust or other slight uncleanliness c&n easily
   be wiped off lvith a little brush.
 5. Before inserting the cartridge set the countirg tlial (3) to stroke
    "47n. by turnirg the two projecting pins clockwise. Norv place
   the cartridge into the left-hand (feedir:g) spool chamber. Fasten
    the film torgue projectirg from the cartritlge in the slit of the emp-
   ty spcol, and roll up just as much of the film on the spool to
   allow the sprocket wheel to catch the perforation on both sides
   rvhen the core is inserted in the spool bed.'
 6. Let t,he camera back into the grooves from above as close as
   possible to the upper eCge (without pushine it), only give it a
    little final push upwards to make it close completely. Then lock
    it by means of the milled button (la). (Compare I, S 3). When
   attachirg the carnera back, the bottom lockmust stand at, o'Aoo.
    If the knob is set to t('Z'( and the back forced on to the camera,
   the bottom latch will be damaged and the camera cannot be
   locked.
7. Dopress the shutter release lever (2)    this causes the shutter                                        -   to run down   and keep it pressed in this pcsition. Press the                -   windirg lever (7) down to its stop repeatedly until the counter
   shows the number "0". During this manipulation the rewinding
  knob (8) has +,o rotate in the oppcsite direction to the arrow.
  Should this not happen, a mistake has been made in loading.
  The camera must, be opened to put matters right.
8. Release the shutter lever, wind up the tension lever (7) once mole,
  and the iount,er will now stand at number "I"  (one stroke
   after o'0'o). The Tenax is ready for 50 exposures.

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14 :  MiIIed locking button for the camera back
       15 : Tripod bush
      16: Winding claw for feeding spool
       17 - Film transport sprocket
       18 : Spring holding the spool in place
       19 : Winding claw with receiving spool
                                17 18 19
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      II. Setting the Lens Apertare and, Distanee Meter
        l. The aperture is set by turning the inner milled front ring (12) of
        the objective. The red dot on the lens mount is set against the
         stroke for the desired diaphragm number on the outer rirg. The
          larger thc diaphfagm number, the smaller the lens aperture. the
          greater the depth-of-field, the longer the exposure required. x'irst
         set the diaphragm and then the distance.
      2. Thefocusirg scale is engraved into the outer ring of the objective.
       The distance set appears on the edge of the pointer.(10) above

the lens. Distances ranging from infinity to 4 feet can be set by
   turning the milled lens ring. In-between lengths c&n easily be
 .  estimated from the figures on the scale. The distance is measured
   from the film level rvhich practically means the camera back. The
   distanee scale, together r.vith the diaphragm numbers above it,
   serve for measurir:g the depth-of-field, so that you can read the
   depth-of-field at any lens setting. If e.g. the distance has been
    set at 8 feet, and the diaphragm at 11, the sharpness reaches from
  24 feet to 5 feet, Tire depth-of-focus scale on the eamera is
   calculatedfor a confusion circle of U30thmm (I/l50th of an inch.).
   The highly valued Zeiss Ikon tu'o point-focusing systcm renclers
   the Tenax I ever ready for immediate action. The red dot on the
   diaphragm scale is betlveen the numbers 5.6 and 8, rvhile the
   distance scale has the red dot at 18 fect.
   ThissetbirLgyields a depth-of-sharpness  reaching from l0 feet 1o
   infinity u'hich x'ilJ no doubt suffice in most cases.
III. Setting the Shutter
l. The built-in Compur Shuttel is wound up by means of the tension
   lever (7) which simultaneously moves the film on to the next
   picture. The speedis set by actuating the levcr (l) until the desired
  number appears in the windorv (9). The figures T,2, 5, T0,25,
   I00 and 250 signify fractions of a second, the speed values are
   thereforc lll  (: I secon d), ll2, Illth, t/10th, Tlzlth second etc.
   f'or time exposures the letter 'oBo' has to appear in the witrdorv.
   All of the speeds except f/500th second, can be set either before
   or after the shutter is rvound up.
  To set the shutter at 1/500th second press the iever (l) dorvn-
   \vards until it stops, whereby a slight resistanee will be felt. When
   settirg to t/500th sccond make sure that the shutter is not wouncl
   up. Should the shutter already be wound, it ca,nnot be set to
   l/500th second. If, on the other hand, the shutter is wound up

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after l/500th has been set you can change over to any other
                                ('8".   instantaneous speed or to
   The exposure is made by depressing the shutter release lever (2)
   with the forefinger of the right hand. When set at "B" the shutter
   lemains open until pressure is relaxed.
                                                                                                             It
IV. Flash Contaet                            &i$rt'/tl. The synchronized X'lash Contact built into the shutter allov's
        f .rr  f lashl ight exposures, also at instantaneous speeds, I'ith regular
  and electronic flashes as u'ell as rvith electrically ignited flash
   powder. The flashlighL attachment required can be mounted to
  the tripod socket in the camera by means of a special holding
   device. A cable, having a plug at one end to fit into the contact,
   nipple (20)in the shutter, provides th.e electric connection betu'een
   the flash contact in the shutter and the flash unit. Such a cable,
   30 cm in length, includingfittings, is available for the Tenax. The
   electric current to be usedmust not exceed 24volLs and2ampdres.
  Tho insi-arrt speed sctfing of the shtriter depentls ol" i,he ignition
   delay and the duration of the {lash used for the exposure. Wtrere
  these tv'o values &re unknown, set, the shutter at l/10th sec.
  At this speed the flash is certain to be fully utilized. If the
   duration and ignition delay of the flash are known, the shutter
  can be set at a shorter speed, as indicated in the following chart:
             Duration plus ignition dclay of flash:
   2-4     5-7    8-16   17-30  3I-45 milliseconds
  1/500tlr 7l250Lh   l/r00th l/50th  ll25t1n second
                          Shuttcr Speeds
  In the last tlr.o groups, shorter speeds may be set in connection
   u.ith the flash, which, ho$'ever, means a decrease in the trans-
  mission of light.
  Electronic flashes, which have no intervals, can always be used
   rvith a shutter speed of l/500th second.
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V. The Enposure
    1. Press the little milled knob on the side of the finder to the left,
        lift the finder cover (5) which serves as eye piece and the finder
      lens (6) opens up. When in use the finder must be held close to
      the eye so that the edges of tlre rectarigular frame at the back
       coincide with the edges of the  f inder lens in front. Any pressure
     on the back frame will cause distortion of the image. To avoid
       slanting walls etc. in yogr pictures be sure that vertical lincs stand
       parallel to the vertical edges of the finder.
   2. Ilold the camera firmly in both hands with the right forefirger on
       the release lever (2) and the left forefirgeron the tension lever (7).
      Press the tension lever (7) Cown until it stops. It will iu*p back
      to its original position automatically. Keep the finger restirg
       lightly on the lever. If so desired, the camera c&n be screwed
     on to a tripod. A tripod brrsh (15) is for this purpose built into
      the base of the caner&, next to the latch.
    l7I. Renrouing ttrc Filln
     l. The fikn, after havirg been exposed, must be spooled back into
      the cartridge. Depress the knob (4), at' the same time turnirg the
       rervindir:g knob (S) in the direction of the arrow, whereby the
      film is rolled back into the cartridge. A slight noticeable resi-
      stance has to be overcome. This signifies that the film strip is
       slippirg out of the hold of the receivirg spool'
   2. Remove the c&rrera back (see I, $ 3) and the cartridge can easily
     be taken out.
   3. Should you have made 50 exposures without observing the count-
      irg disc you will suddenly feel that the windirg lever stops
       half - way when beirg pressed down. In this case do not use force,
     but only rewind the fiLn, otherwise the perforation might, be
      damaged and the rew indir g of tlre  f ilm perhaps become impossible   "


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