Exakta Model A Electronic Flash User manual

EXAI(TA ELECTR('NIG

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  The Exakta Electronic Flash unit is a dependable source of light contained in a light-
   weight, portable and compact leather oase. lt is as effective as any other type of light
  source. lt is daylight quality, even, cool and dependable.

   In Electronic Flash, there are a few variables which control the light on the subject-
   theyare, the aperture of the lens, the speed of the film, the developer used in processing
  the film and the distance of the light to the subject. lt is the intensity of the flash of
   light from the electronic flash tube which takes the picture with electronic flash, not
  the shutter speed. Now, since the electronic flashlight which reaches the subject has
  to record on film, the Exakta shutter curtain must be wide open. Accordingly, the
  shutter speed setting on the Exakta should be set on either ll2sth or 1/5Oth of a
  second for on these two speeds the Exakta shutter curtains are at their largest or widest
  opening. The X socket on the Exakta camera must be used at all times with electronic
   flash units!

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Here are some points that you may want to know about the Exakta Electronic Flash Unit:
            1.. Color of light.  . . Daylight Quality-approx. 5500' Kelvin-can be used
             with daylight color film.
        2. Coverage of reflector.  . . 50".
        3. Recycle time...Approx. 4 seconds AC line.
        4. Flash Speed..  . f / lOOOt.h second.
        5. Life capacity of Flash tube.  . . Approx. 50,000 flashes.
        6. Operation..   . either with 3-"D" cell batteries for 5O to 6O flashes
             (with each set of batteries) orwith AC line operation (plug into your
             wall socket) for continuous flashes.

   To Operate your Electronic Flash Unit       of your electronic flash unit.located on
    Attach the universal mounting bracket      the side of the leather carrying case.
    to your ExaKa camera. Slide the light     Then ptug the other side of the AC line
   beam reflector into the shoe of the       into the room socket of the AC electric
     bracket. Plug the 3 prong plug into the      current in the wall. Be sure the button
    socket on the side of the battery case.      on the side of the leather carrying case
    The tip of the coiled cord is placed into        is in the "downward position".
    the X socket on the Exakta camera.
                                             With Batteries
    With AC Electric Current                     Inside of the leather carrying case is a
    Plug the AC line cord into the socket      folding leather compartment which
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holds 3-"D" cell batteries. Besure that       Indicator Light
 all the batteries in this compaftment     On the back of the reflector is an indi-
face the same direction (so that you                                          cator lamp which lights up when the
can read the label). Place this leather       unit is ready to be flashed.  lt will light
compartment into the leather carrying     up quickly when you use the AC line.
case and close the top. Be sure that           It will be much slower with the battery
the red and blue wires from the com-       pack.
partment are tightly attached to the
terminals. Reminder: The 3-"D" cell     Red Flasher Button
batteries should be fresh, otherwise     On the back of the reflector is a red
you cannot expect good efficient re-       button which when pressed will fire the
sults! Eveready E 95 "D" cell batteries       flash tube. This method of firing can
will give better and more consistent     be used for open flash on "time" or
results than most "D" cell batteries.      "bulb"-or when you want to use the
When using the battery pack as an       electronic unit for "fill-in" light.
energy source, be sure the button on
the leather case is in the "up" position.      Guide Numbers
The button should always be in ;     On the back of the reflector is a table
"downward" position at allother times!      engraved with Din, ASA, L.Z. and G.N.
When the battery pack is "on" and    We will only concern ourselves with
working with batteries, you will hear     ASA and G.N. The ASA number stands
and feel a slight buzzing indicating       for the speed of the film being used
that the vibrator is working.                with the Electronic flash. G.N. stands

for Guide Number. For example, a film      own www.butkus.usGuide Numbers depending
       having an ASA speed of 40 has a Guide       upon the exposures that satisfy
      Number of IO2. Likewise, a film having         you. To get your own Guide Num-
      a speed of ASA 1O0, has a Guide Num-          ber, multiply 6 (for 6 feet) by the
      ber of 165. This is only for Black &         apefture setting.
      White film. For Kodachrome, which has
      an ASA speed of 10, the Guide Number       Battery Rechargerc
         is 35. By dividing the distance into the   A battery recharger which recharges
      Guide Number, you get the diaphragm      the "D" cells is available on special      stop to use.                                                         order.
     Your Own Set of Guide Numbers
                                                Ring Light:
     Guide Numbers are based upon many   A new Ring Light Unit containing a      variables which depend upon your                                                      circular light tube for close-up photog-     equipment and techniques. According-
       ly, you can make your own set of      raphy is available at $39.50 list. The                                             Ring Light unit mounts on camera lens      Guide Numbers by doing the following:                                                     for macro-work, and plugs into Exakta      Make a series of exposures with                                                  Electronic Flash Unit. ls instantly re-        your subject about 6 feet from the                                      movable and interchangeable with        flash from the electronic tube.                                               regular light   f urnished with Exakta      Use our Guide Numbers as the                                                     Electronic Flash Unit.        basic exposure. Make a few more
       shots-some using a higher Guide          Nickel Cadmium Battery:
      Number than ours, and a few      A new Nickel Cadmium Battery is now
        lower. Examine the negatives or         available for Exakta Electronic Strobe
        transparencies, and make your          Unit. Price on request.
EXAKTA GAMERA COMPANY    705 Bronx River Road, Bronxville, N. Y.
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