DETROLA Model E User manual

INSTRUCTIONS
 D(TROLA
       Precision Built




  MOD EL
      F-3 .5
         ECAM  RA

INSTNUCTIONS
  To load and unload camera (use lS/g"x2f" or
4x5.5mm) film. It is irnportant that the camera be
loaded and unloaded in subdued light. Hold camera
with the back of it towrrd you and rcmove cover by
pressing the catches outward until they clear the flange
of the camera case. See that the empty spcol is in thc
rop comparrmcnE (along side film transport knob) with
thc notched end in contact with the winding kev.





  Place the new roll of film in the lower receptacle.
Break the seal on che roll and pull the end of the paper
toward the empty spool. Thread the end of the paper
through the slit of the empty spool. Turn the winding
knob a few times in the direction of the arrow so that
the paper rolls correctlv onto the emptv spool.

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   Replace the back cover by holding the back of the
camera toward you and placing the cover in such a way
that the letter A on it is toward your right when the
camera is held in position for photographing. Snap it
into place by prcssing outward the cover catches. Make
sure that it is snapped securely in place. Rotate window
panel to expose windows. Turn the film transport knob
until the figure "l"  appears in the center of the window
marked "A". The camera is now ready to take the first
picture. The window panel should be rotated to cover
openings.
  Vhen the first picture has been exposed, wind film
trntil number "1" appears in the window marked "B".
You are now in position to take yoLrr second picture.
Repeat this process for every picture, first placing the
nurnber in "A" then in "B", etc.
   Vl-ren "8"  appears'in window "B" you will have
taken sixteen pictures.
  After the sixtecnth exposure has been made, keep
turning film transport knob until the complete roll  is
wound onto the transport reel.
  Remove the back of the camera to take out the roll
of exposed film. Seal it with the gummed paper pro-
vided to prevent it from unrolling.

            VIEW FINDER
  Detrola cameras are equipped with optical view find-
ers. By holding the camera close to the eye the scene
in the view 6nder will be of the same proportions as
that produced by the lens on the film. All objects that
appear in the finder will appear in the resulting picture.

          EXPOSURE INDICATOR
  The "exposure indicator" is located at rhe top of the
camera in the center. It is of the density type. A com-
plete set of calibrating charts is located on the back

cover. These are used for determining the correct ex-
posure in conjunction with "exposure indicator" read-
ings.
     .ne





  To use-hold the camera uP at approximately 12
inches from the eye and look through the indicator at
the subject being photographed. Note the highest num-
ber discernable. These same numbers appear on the
dial charts and are labeled "Exp. indicator readings."
The obscrved number should be lined up with one of
the five positions on the outer dial as follows:
  For scenes over water, in intense light outdoors,
snow scenes or scenes of intense reflections, use position
lebeled "BRIGHT".
   For scenes in sunlight and most outdoor photography
and not in intense light or reflections, use position
labeled "AvERAGE".
  For scenes outdoors on cloudy days, in scenes over-
shadowed by buildints, trees, etc., and in scenes con-
taining little or no sky, use position marked "cLo(tDY".
  For indoor shots with light colored surroundings
flooded by sunlight or intense artificial light, use posi-
tion marked "LlcrrT-rNTERIoR".

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    For interior scenes where illumination is nor entirely
  satisfactory use position marked "DARK-INTERroR".
    After you have lined up the proper "exposure indi-
 cator reading" with the proper "scene positiont' you
 must adjust for the proper emulsion speed for the type
 of film you are using. The speed of the film should be
 selected in the small opening on the innermost dial.
 These ratings are equivalent to "Veston units" and can
 be supplied to you by your film dealer. The charts are
 now in position to show the correct shutter speed at the
 bottom of the outer dial corresponding to values of
 "f" as shown on the shutter housing. If coincidence is
 not perfect use the nearest shutter speed to the proper
 "f" value or interpolate the values,  i. e. if l/2;  sec. lies
 midway of  f .t6 and f..z2 then adjusr aperuure control
 on lens assembly midway of these two numbers.

         THE TENS AND SHUTTEN
  The lens is a highly corrected anastigmar. Its ele-
 ments are precisely ground to predetermined formuh.
 The resultant negatives have extreme sharpness, and no
 apparent falling off of light or loss of detail ar the
 corners. This is characteristic of the \flollensak "velos-
 tigmat" lens.
  The shutter is a Vollensak "Deltax" with provision
for time and bulb exposures.

            TENS.DIAPHRAGM
  An explanation of the purpose and operation of the
Iens diaphragm will help you in obtaining finer results.
Vith the diaphragm ser ro rhe largesr opening (smallest
numerical "f" value), the lens will pass the maximum
amount of light. Each successive smaller stop or dia-
phragm opening 14.5, 5.6, g, l l, 15, and zz] limits the
amount of light by one-half. As the diaphragm is closed

greater depth of focus is secured. If exposure charts
 indicate f.4.5 et t/so of. a second, an equivalent exposurc
can be obtained at t/zs of a second and an f. value of
1.6. At all times it is advisable to work with the
smallest lens stop in order to get the greatest depth
of focus possible. It musr be remembered that in
photographing moving objects, higher shutter speeds
are necessary to stop motion, to prevent blurred imagcs.
Thus, it follows, that for moving objccts, larger lens
openings (smaller numerical f.. values) and highcr
shuttcr speeds are necessary.

         TIME AND BUI.B EXPOSURES
   Scenes in poor light outdoors and most scenes indoors
require time exposures to properly expose the film. In
making exposures that require more than  I /2, second,
it is imperative that the camera be placed on a tripod or
some solid support to prevent it from moving and thus
blurring the picture. Provision is made for a cable
release and for standard tripod mounting. The shutter
speeds can be varied by moving the indicaror located
at the top of the lens assembly unit.

              FOCUSING
  As the focusing mounr is of the tclcscoping typc, ic
is first necessary to pull outward the shutter assembly
until you hear a click. This locks into place the telc-
scoping mount. To focus the camera rotate the large
focusing ring on the front of the camera to the propcr

t
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      {ootagc. This is the distance of the object being photo-
     graphed from thc camera itself. This adjustment  is
      cornpletely variable from thrce feet to infinity.  Iil/hen
      the camera is not in use, push telescoping mount inward
      to original position.

                 GUARANTEE
       This Detrola camera is a "precision-built"  instru-
     ment. The finest materials have been uscd in its con-
      srruction. All parts are accurately machined and fitted
      to provide ruggedness in use.
      The camera is unconditionally guarantecd against
      defcctive n'orkmanship and material for a period of one
      year. It is guaranteed to give satisfactory performance
      under all conditions of normal operation. If service is
      necessary, return this camera to your local dealer or
       direct to the factory, postage prepaid, and at our option
    we will either replace or repair any defective parts.
      This guarantee is voided if in our judgment the camera
      has been abused or misused.

    DETROTA CORPORATION
           DETROIT, MICHIGAN
\)

DEPTH OF FOCUS
     SCALE
  For Lens of 2-lnch Focal Length




      Q..ois.inn Buttt

 CAMERAS



                                              )

Depth of Focus is the distance that the camera
will record (from the nearest to the farthest point)
in which the images are sharply defined. lfhen a
camera is focused on a particular object, the sharp-
ness of focus (image) is not confined entirely to
that distance alone. If the lens is stopped down to
a small aperture, the range of sharpness of near
objects moves towards the camera and that of dis-
tant objects away from the camera, thus increasing
the range of sharpness. Thus, the depth of focus
varies with the lens opening and the distance on
which the camera is focused. Referring ro the depth
of focus scale chart, you will observe that a lens
opening of f.5.6 at a distance of six feet from the
camera, objeas will be seen clearly in the picnrre
from five feet to seven feet six inches from the
camera. If the camera is moved back to thirty feet,
the depth of focus        f .5.6 will now be fifteen feet to
infinity. If the subject^t   stays at six feet but the lens
opening is changed to f.16, the cleady defined ob-
jects will now be from three feet nine inches to
fourteen feet. For taking several sequence picnrres
of action shots when time does not permit change
in camera adjustments, estimate the average distance
that the subject is expected to be and use the lens
opening that will cover all extreme distances neces-
sary.
   If, according to the chart, the depth of focus
extends over considerable distance, set the camera
focusing adjustment midway between these limits.
      Always focus your camera on the most
      important part of the subject being
      photographed.
  Always remember that greater depth of focus is
obtained with smaller size lens openings and that a
greater amount of exposure time is also required.
  All Detrola Cameras Made Entirely  itt U.S.A.

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   D ETROLA
     CANDID CAMERAS
                  DescriPtion                 List
 MODEL B
      f.7.9 Lens, Built-in Exposure Meter, Telescopic
    Lens Mount, Built-in Optical Viewfinder, Fiied
     Focus, Time, Bulb, Instantaneous. ....       .$ 9.50
 MODEL D
     f.4.5 Anastigmat Lens, l/25-tl200 Shutter
     Speeds, Set of 3 Exposure Calibrator Discs,
     Built-in Exposure Indicator, Variable Micro'     matic Focus 3 feet to Infinity.                 ..  15.00
 MODEL E
      f.3.5 Anastigmat Tnns, l/25-U200 Shutter    Speeds, Built-in Exposure Indicator, Set of 3
    Exposure Calibrator Discs, Variable Micro
     matic Focus 3 feet to infinity.                 ...  19.50
 MODEL G
      f.4.5 Anastigmat Lens, t/25-U200 Shutter
     Speeds, Variable Accurate Focusing 3 feet to
      Infinity, Built-in Optical Viewfinder.          9.95
 MODEL H
      f.4.5 Anastigmat Lens, l/25-U200 Shutter
     Speeds, Set of 3 Exposure Calibrator Discs,
     Built-in Exposure Indicator, Variable Micro-
     matic Focus 3 feet to Infinity.                 ..  t2.50
 MODEL K
      f.3.5 Anastigmat I*ns, l/25-U200 Shutter
     Speeds, Built-in Exposure Indicator, Set of 3
     Calibrator Discs, Variable Micromatic Focus
    3 feet to Infinity.                               17.50
 MODEL A
     Precision built-candid type, Ilex Meniscus
     Lens, Instantaneous  shots and time exposures.
     Provision for extra roll of filnr. Fixed Focus... 3.95'Leather Carrying Case for Models B, D, E, G,
   H. K .                                               4.50
 Suede Carrying Case for Model "4"..                 1.00 CableRelease.....                                     .60
 The above Detrola Candid Cameras take 16 pictures on
 standard 25c film-Eastman 127 or Agfa A-8. These
 Cameras use inexpensive standard film, giving you 16
 pictures ti/sttvlr/at'. All Detrola Cameras with f.3.5 and
  f.4.5 lenses are corrected for color photography.
  DETROLA CORP.. DETROIT, MICH.