Ihagee Double Extension User manual

DIRECTIONSFOR USH
             -of lhagee Garneraswith double extension
                                                                       I                                               a,I


lhagee
Patent Duplax

lhagee
Duplexde Luxe

fhageeNeugold

lhageoPionier





DRESDEN. SCHANDAUER$TR. 24

allov the folding spring plate at the top to snap over it. Do not
touch the sensitivefilm.
The Shutter.   Seepages8 to 12 of instructions.
Exposure.    Before making an exposurefind out the time re-
quired for it by meansof an exposuremeter or the table printed
    ttt. end of theseinstuctions. Do not hold the camerain your
"thand exceptfor snapshots. If exposuresexceed1/s6s€c.,placethe





                                                    Fig. 3

cameraaon table or screv it to a tripod.  For this purposetwo
bushes(for verticaland horizontalpictures)are provided.  If the
distancehetweenthe object to be taken and the cameraamounts
to 4pproximately200 times the focal length, exposuresshould be                                         cinfinitys.madevhile the camerais focussedfor        The focal length
 is engravedon the front lens mount and usually,in our cameras,
equal to about 4t/6 ins in the 3tltx2tle size,Stlainsin the quarter
 plate size,6t/s ins in the postcardsize and7t/ains in the halfplate
size.

4

Focussing.  For nearerdistancespull out the knob of the rack c
and rotate until the pointer is oppositethe desired distanceas
shovn on the focussingscaled. To operatethe rising and falling
front turn the pinion e.  For the crossfront (or rising front for
horizontalpictures)the pinion f is utilized.

For the best results
it  is  advisable to
focuson the hooded
ground glass screen
until a sharp picture
results.Havirrgdone
this or having foc-
cussedthe picture at
the scale the screen
is removed and a single metal
plate slide loadedwith its sensitive
plate, is slid into the placevacated
by the screen (Fig. 4).
Draw out the slide and expose
by means of the shutter. If there        Fig. 4
is no time to focus in the above mannerthe pic-
ture can be obtained by means of the scale and
the limits of  it by the rotating'view finder g.
Some camerasare fitted with a very practical wire
view finder, it is to be found at the lens-holderand is movedup-
wardsuntil it standsparallelto the lens, The sightingis likevise
erected,and the object viewedthrough it and the wire view finder.
The picture is now to be seenin its correctoutlines After having
taken the picture replacethe metal dravout of the plate holder.





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The  Dlaphragm.     As the annexed directions for operating
 the shutter indicate, every shutter is provided with a diaphragm
 or stop vhich can be reduced or enlarged at  vill.   Just a few
words about ho.'v these stops are used.   If  it  is intended to take
a picture in which the foreground as well as the background vith
houses, mountains, trees, etc. appear equally sharp, a stop is
needed.  By means of a small lever mer'rtionedin the directions
the diaphragm can be closedrnore or lessto obtain a greaterdepth
of focus. The rule is: the smaller the diaphragm, the greater the
depth of focus and the longerthe exposure!-  Larger diaphragmscan
be used for snapshots,while time exposuresrequire smaller ones.
The  double  extenslon.    Vith some double anastigmatsthe
front lens can be screwedoff and the backlensalone can be used. As
the focal distancewill thus be doubled,the rapidity will be coneide-
rably diminished and in consequencethe exp$suremust be increased.
The backiensonly,being roughly double the focal lengthof the com-
plete lens, requires the use of the double extension. Rack forward
until a complete sharp image is visible on the focussingscreen.
   Using the tripod is indispensablewhen taking views with the
backlens.  Xi/ith simple anastigmatsthe backlens cannot be used
but to utiiize the double extension in a better way  it  is advan-
                   slhagee-Outfita,tageousto use the              an invaluable accessory.
To  clooe  the  camena.           lf the rising or cross front has
been used replace in central position. The view finder also must
be brought back in  its normal position.  Then turn the doubte
extensionquite back in the camera and press the milled button
against the baseboard. This  is absolutely necessaryfor closing
the camera. Push the lens support back along its rails as far as
it will go by means of the plated finger grips as when opening.
Press the struts ft against the camera at the same time raising
the baseboard. The side-struts will now be unlocked and the
base-boardclosed until a catch is felt to lock.
6

Shutters
   for lhagee Garneras
The shuttersused in connectionwith our camerasare briefly
describedbelow:
                     Shutter for time and instantaneousexpo-
                               tlzs-t/roosec. The Zemith $hutten                    sures
                 shown is of the automatic type, i. e.:  it
                           is always rea.dyand need not be set. Ex-
                   posure is made Lry depressingthe finger
                    releaseA Gf, if preferred, the wire reiease
                   which can be screwedinto the srnallnut B"
D
                                 If lOngep  time  expostgres  are desi-
red, adjust the lever c so tirat the letier Z snapsinto the notch.
The shutterwill now open by pressureon the releaseand rennain
open unti! a secondpressure.When the releasehas beenpressed
aiter the shutteris setto Z, the latter is openedfor long time e>:'-
posuresas often requiredfor indoor work.
For short  time exposures  set the letterto B.  If the release
is presseddcwn now, the shutter will open but close again as
soon as the pressureceasesss that both very short and longer
exposurescan be made.
when nrakinginstantancous  expoaures  or snapshotsob-
servethe folloving: The instantaneousshutter speedsstatedare
partsof a second;25, for ex*mple,meansrlw1.50, t/56;and 100,
iyr* ....  Accordingto the time of exposrlreascertained,one of
thesethree speedsshould be chosenby adjusting the lever so
that the pointer indicatesthe speeddesired. Then depressthe
finger or wire release,whereuponthe shuttervill Open,remain
opJn for the time set, and closeagain automatically.The expo-
sureis now made,
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The Dlaphragm   Scale   will be found below the lens. A small
 pointer D can be displacedto the right and left and easily set to
 the correct diaphragm in each case.
The  Prontor     I  shutter with  automatic release resembresin
 construction the Zenith shutter already described except for the
delayed action release, To take a picture of one-self, screw the
camera on  to a stand or place  it on a table, etc., by turning
down the smali support.  According to the time of exposureas
ascertained,chooseone of the instantaneousspeeds(delayedaction
releasecannot be used for time exposures)by displacing the lever ucn.       fhen set the shutter for automatic releaseby pushing the
small red iever to the right.   Releaseis effectedas usual by de-
pressing the finger or wire release,the delayed action releasewill
operate the shutter after about 10-12  sec. and exposure rvill be
made accordingto the time-set.  After  its releasethe shutter is
set again for normal exposuresand for another de)ayed exposure
the red lever must be set again. -
   A   D     C'the Prontor      lI  Shutter shovn here can be
                used in different lrays.  For exposure, either
 B                the small lever A  is presseddorvn or a wire
                  releasescrewed into the nut B.
                       All exposuresrequire previous setting of the
                   shutter bv pushing the lever D to the left be-
                   fore releaseis possible.
                 For time exposuresof longer duration turn the
milled discc so that the red mark is oppositethe letter T.  pres-
sure upon the releasecausesopeningof the shuiter which closes
only after a secondpressure,so that time exposuresof unrimited
duration can be made. For shorttime exposuresset the disc vith
the red mark to B. A slight pressureappliedto the shuttervill
open it, the shutterremainingopen until the pressureceases.In
this way, very short as well as longer exposuresare possible.
E

For instantaneousand rhort timc exposuresof  definite duration
   set the disc 1o the correspondingspeedas indicatedby one of the
   numbers.  I  is equalto  I second,2totl2, 5to r/s, lOto rfte sec.;
    etc. Setthe pointerto one of thesefigures,accordingto the timeof
   exposuredesired,and pressthe release,the shutterof coursehaving
   beenpreviouslyset. The shutterwill then open,remain openfor
   the time desired,and closeagain automatically.
   For instantaneousspeedsthe delayedtime mechanism(automaticI
J  release)can be empioyed. .{fter tensioningset to the time desired
   and depressthe red lever F. When the releaseis then pressed
   the mechanismdelaysthe releaseof the shutterso that the actual
   exposureis delayedfor a few seconds. The shutter is then set
   again for normal work vithout delayedrelease,'andeach furthcr
   actuationof the delayedmechanrsmrequiresrenewedtensioning
   of the red lever F.
   Ihe Diaphragm  Scale  is positionedabovethe lens.The small
   pointerE can be displacedto the left and right and easilyset to
   the correct diaphragmin each case.
                    The lbson  Shutter  shown here is also
                     an automatic one which  is alvays ready
   B                and requires no setting. Exposureis made
                      by the depression of the finger releaseA
                             or,  if  preferred, of the wire releasevhich
                  may be screwedinto the small nut B.
                       For pnolonged  time  exposures   turn
                         the small milled disc C above the lens
                              until the pointer is at Z.  Pressureon the     fre:ji'i\.* P
   releasewili cause the shutter to open and a second pressurewill
   close it again so that exposuresof unlimited duration are porsible.
   For short  time  expooures  turn the disc to B.  Pressureon
   the rereasewill open the shutterwhich will close again when the
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l4I
I     pressure cet"sesso that both very short and longer exposurescan
I    ue made.
     For instaaltaneous   and  short   tirne  expoouFes   of de-
       finite duration set the disc to the time required, that is, to one
      of the figures on the disc.   i  is equal to  I second,2 to rf2, 5 to
       t/s, i0 to t/ro second, etc. Set the pointer to one of these figures,
     according to  the  time  of exposure ascertaineC,and press the
     release. The shutter wiil then open, remain open for the time
     desired,ancl close agz,inautomatically. The snapshot is made.
    The Diaphnagm   $eale   will be found below the lent. A small
     pointer D can be dis;:laced to the right and left and set ta the
     correct diaphragrn in each case.
          C   Pul"   i'"rhe Gornpur  $hutten   is an ingeniously
                       designedclockwork and should be treated
                        as such. Above all, never #se force and    B
                            clo ttot fail to read th*  ins'iructi*nscare-
   G                        fully.  Exposure is made by i:ressingthe
                            finger reieaseA  or,  if preferred,t he wire
                          release which can he screweci into  the
                         small nut B.
                                             F
    Explamatlon @f tette!'E:  Lever A ser- D
    ves for releasingthe shutter. The wire re-                                         uT4     leaseis screwedinto the srnall nut B.  Ey
     turning the disc C or the srnall milled C
    wheel the various speedsare adjusted. The a
     srnallwheei *Gn shculd be set before each "
    exposureas follo'urs: for snapshotsto u ffiu
     or "I"; for longertime exposuresto nZ" or uT'; and for shorter
    time exposuresto ,,D" or ,,8". By meansof the lever D the
     shutter is set for snapshots,and the pointer E servesfor setting
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the diaphragm.  If  pushed back after   the  shutten  has
been  set,  the button F will disengagethe lever D for a second
additional setting whereby the automatic releaseis set. However,
the button F  is found only on shutters provided with automatic
release,the advance mechanism. Shutters lacking this device con-
tain all the parts described,vith the exception of the button F.
Tirne  Exposures:    are made automatically,and the shutter
need not be set. For longer time exposuresthe outer ring C
or the small 'xzheelrrG" is turned until the letter T is at the point
marked. Pressureon the finger releaseA or on the wire release
vill  open the shutter which remains open until  the relcase is.
pressedagain.  In case of time exposuresof shorter duration the
letter B  is moved to the marked point, and v'hen the finger re-
leaseA  or the wire release is pressed,the shutter will open and
remain open as long as the pressure lasts" This procedure is
follo'ovedif exposuresexceed 1 second.
Instantaneous    Exposunee:    For instantaneousand short
time exposures up  to   I second, turn the outer ring C or the
small milled wheel "G"  while simultaneouslysetting the small
        'rG't    rrMt'vheel       to      or "1"  until the desired exposuretime is at
the marhed point when the shutter will close automatically if ope-
ned. The figures marked on the ring, with the exception of 1,
indicate fracfions of a second, 2 being equal to  tlz, 5 to 1/5,.
l0 to 1/1e,etc., while at 1 the shutter vill  remain open a  full
second.  If the desired time coincidesvith  the marking, push up
the tension lever in  the direction of the arrow until   it  clicks.
The shutter is now set and ready for exposure. Pressureon the
finger releaseA  or on the wire releasewill cause the shutter to
unwind and open automatically, remain oJ:en for the time set,
and close again. The shutter is then ready again for time expo-
sures after the ring has been set to T or B, vhile every instan-
taneousexposurerequires previous setting.
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Gorrect  Posltlon  ol DlaphPagm  ie lmportanl!   The
Compur shutter is constructedso that  if the lettersT and B are
on the index line, the tension lever D is locked,and in caseof
speedsrnnging from  I second to maximum, the time mecha-
nism (T- B) is disengaged,an arrangementvhich preventsfailures
even if the camera is handled carelessly. The speedsincrease
vithout interruption from  I secondto 1/1s6s€c., and it  is pos-
sible to obtain intermediatespeedsby settingbetweentvo figures,
(for examplebetweenr/seand %oo: tft6 sec.). No intermediate
                          r/166and maximumspeed(tlw, tlxo,speedsare possiblebetween                                                                                                                                               I
l/aoo)or betweenB and I second" For maximum speedsaffange
the time before setting the shutter,as it will be hardly possible
aftcr setting.
Automatlc  Release  appliesonly to shutterswhich are fitted
vith an advancemechanismand the button F.   If you vish to
lppear in the picture to be taken,sei the shutteras describedand
push back the knob F locatedon the edge,vhereby additional         I
tensioningof the lever D  is made possibleand the automatic    It
releasevill  be set. Releasetakes place in the regular vay by
depressirrgthe lever A or the vire release,whereuponthe auto-
matic releasevill releasethe shutterin abouf 12 secondsand ex-
posure be made according to the time set. The shutter is now
set again for normal vork, and  it  is necessaryto proceed as
describedif one wishes to take a picture of oneself. The auto-
 rnatic releasecan be employedfor all instantaneousspeedsstated
 with the exceptionof the maTimumones (t/1s0to Ysbg).





 12

Direction$ for use
In columnA look for the month and hour respectingthe exposure
concerned.In column B you find the numberfor the objectto be
photographedor for the subjectconcerned,in tableC the number
for lighting, in table D the numberfor the sensitivityof the film,
and in columnE the numberof aperture.The sum of thesefigures
shewnin table Fis the time of exposure*.
Examplel  To makean exposureat ll  o'clockA. M. in May of a
streetof mediumvidth at slightlycloudedskyon a normallysensitive
       l0=ofilm of     Oin at a diaphragmopeningof Fi8, one will find:        r0
       TableA: May ll  A. M. numberl.
       Table B:  for streetsof mediumvidth number 6.
       Table C:  for slightly cloudedsky number2.
                             10'0       TableD:  for a film of    DIN number8.                                 l0
       Table E:  for the diaphragmnumber 5.
The sum of thesenumbersis 22 equal to t/s sec.exposuretime
in column F.
 * Ncgatlvr flgur.et tlke 51,  -2   eto. murl bc deductcd durlng addition.





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