Penta Korvette User manual

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13. Cartridge Chamber                  19. Exposure Meter Needle
L4. Sprocket                          20. Sprocket Release Button
15. Take-Up Spool                     21. Synchroflash Socket
16. Photocell Window                   22. Strap Eyelets
L7. Filmspeed (ASA) Dial               23. Accessory Mount Socket
18. Exposure Meter Dial                  24. Tripod Socket
                                     25. Focal Plane Mark





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BEFORE TOADING WITH FIIM FOR PICTURE-TAKING
  Read these instructions carefully so that you know the special features offered by the
single-lens reflex construction of your camera.
  PICTURES EXACTTY AS SEEN IN THE VIEWFINDER,
 By use of a special pentaprism in conjuncticn with the picture-taking lens, the image
seen in the viewfinder is identical with the negative reproduction of the subject on the film.
Although there is a brief black-out of the viewfinder image for a fraction of a second
during shutter action, you can always See exactly what you are taking.
  PRECISE FOCUSING
  The light rays reflected by your subject pass through the main lens, and are deflected
upward by the quick-return mirror to form an image on the viewing-focusing screen. This
image is seen in correct orientation and size throrrgh the viewfinder eyepiece and the pentaprism
which reflects the rays three times. When the focusing ring (6) is turned the image of the
subject, formed on the viewing-focusing screen, can be adjusted to maximum sharpness.
With the subject thus brought into correct focus, precisely as it will register on the film,
the shutter button (2) can be pressed for actual shooting. Because the focusing and viewing

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  are done through the same lens as for  picture-taking, there is no sighting error
   (parallax), while you are enabled to ascertain visually the extent of blurring of the areas in
  front of and behind the main subject which is in sharp focus. With the focus set at
   infinity (-),  the viewfinder image is x0.8 magnification.
    OUIGK.RETURN iIIRROR,
   When the shutter button (2) is pressed to release the shutter mechanism, the reflex

                                                                                                                                                                                                                                                                                                                                                                                             :  mirror flicks up to return to its original position the instant the action of the shutter is
  completed. Consequently, the subject is always clearly visible in the viewfinder except
  during the movement of the shutter.
     FULI.APERTUR,E VIEWING AND FOCUSING



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            ,   This camera is provided with a fully automatic aperture mechanism wliich closes     .'
  down to pre-set aperture size only during shutter action. This means that maximum
  aperture size is always available for viewing and for utmost precision in focusing.
    APERTURE IEVER,
    For checking the effects of pre-selected aperture size, there is provided a manual aperture
.  lever (7) which permits viewing at any f/ srop desired. Releasing this lever immediately
  gives full aperture for viewing or focusing.

COCKING IEVER
  This lever (1) simultaneously cocks the shutter and advances the film one frame in one
stroke. It remains locked until the shutter button (2) is operated and the shutter mechanism
is released. This arrangement positively prevents double exposures.
  SHUTTERSPEED DIA!
  This dial (4) can be set at any time, either before or after cocking. Click stops are
provided at each setting. When position " B " (bulb-manual shutterspeed control) is used,       J
the shutter remains open for as long as the shutter button (2) is kept depressed, and during                                                                             Ithis time the viewfinder will remain blacked out.
                                    FIIM LOADING
                          This camera will  take any  3S-millimeter film
                              preloaded in safety cartridge. Monochrome or color in
                                   20- or 36-exposure lengths may be used. When loading or
                              unloading film, always avoid direct lighting. Work in
                               the shade, using your own body as a shield if no other
                                   protection is available.

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        1. Pull out the backhd catch (11), swing open the backlid
       on its hinge, and pull out the rewind crank (12) fully. (Fig. 1)
        2. Place safety cartridge containing unexposed film in
       the cartridge chamber (13). Secure by pushing back the
       rewind crank (L2) seeing that it is tully seated. Pull out
       about four inches of fllm, fold inward about a quarter inch

   I       of the end, and secure to take-up spool (15). Wind a turn.1+
  I
  I                                                             3)   I       of film on to the take,up spool. (Figs. 2 &
   I        3. Turn rewind crank (I2) clockwise in the direction
        indicated b'y the arrow mark to take up the slack in the                       www.butkus.us
        safety cartridge. (Fig. a) Check fit of film perforations on
       the lower side with the sprocket teeth, and turn the take'
      up spool (15) slightly to make sure that the film plays out
       properly. Close backlid, and secure by pushing in the
        backlid catch (11).
        4. Cover the lens with the lens cap. Operate cocking
       lever (1) and the shutter button, making blank shots, until

the film counter (8) indicates numeral 1. The first frame of your film is now in position
for exposure.
  5. Finally, turn the filmspeed dial (17), and set the ASA rating of the film you have
loaded in your camera against the triangular index mark. You are now ready for picture.
taking.

                  EXPOSURE IIETER READING
                                   The built-in exposure meter
                                                         of your camera accurately indicates
                                       the brightness (light value)           I
                                            of  your subject. The  red
                                                    needle (19) will stop at one of the
                                                            striped guide lines. The aperture
                                                                                    guide                                                             (t/  ) value lndicated by the
                                                                          line, and the corresponding shutter-
                                                     speed showing in the dial window
                                                                         " TIME " are the settings for correct

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        exposure of your film for the brightness of your subject-matter.
         1. Make sure that the filmspeed (ASA) dial (17) is set at the ASA rating of the film
       you have in use.
           . 2. Turn the exposure meter dial (18) so that the shutterspeed setting you wish to use
        appears in the dial window " TIME "
         3. Point your camera toward your subject, then by noting the position of the exposure
        meter needle (19) obtain the proper'aperture value for correct exposure. Adjust the aperture
        ring (5) to set at the indicated value.
          CAUIIONS
                                                                                                         (16)  is not        1) When using the exposu.re meter, be sure that the photocell window
           obstructed in any way.
        2) When, with shutterspeed at 15 (1/15 second), the exposure meter needle (19) is not
           deflected sufficiently to indicate aperture setting 2.8 (f12.8) or beyond, your subject  is not
          bright enough for good exposure. Either the lighting must be improved or film of higher
          speed rating will have to be used.
h
l;..                                           250 (l/250 second), the exposure meter needle (19) moves       3) When, with shutterspeed at
I         beyond 22 (f/22), the subject is tqo bright, and overexposure will result. Use a filter to
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reduce the intensity of the light entering the lens. Froceed with caution however since
  extraneous light (from the sun or the sky) may be causing the exposure meter to indicate
  light value higher than that actually pertains to your subject.
  4) When using a filter, change the filmspeed (ASA) setting of dial (17) according to the
  exposure factor of the filter. For instance, if you are using film of ASA 100 in conjunc-
  tion with a filter with a factor of x 3, you are in effect reducing your filmspeed to one.
  third of its rating, namely ASA 33. In this case set the filmspeed dial (17) at a position
  between 50 and 25.

           I{OLDING YOUR CAMERA FOR PICTURE.TAKING
  Supporting the camera on the palm of your left hand, the thumb and forefinger should
rest lightly on. the focusing ring (6), ready to make focusing adjustments. The right hand
should lightly grip the right side of the camera, with the index finger free to rest lightly
on the shutter button (2). The thumb may be lightly hooked on the end of the cocking
lever (1).
  Raise the camera to eye level, and sight through the eyepiece (3). You will then have a
stable grip and stance. The left hand is used mainly for steady support, while the right

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hanrl .qives :lclciccl stabilitl'.
  \Vhen Llsin.tl tite i'ti'tic:rl IX)sition, thc cocliirrg lever siclc lna-\'be eithcr  r';ri:-c(l or lo\\'crecl.
If  r':risecl, tlsc ii  It'lo(lilic.rtiorr rif tlte ltorizont:rl gril). sul)l)orting tlte left trtrl of tlrc canlcrll irt
thc 1l:tlrtt of thc lt'ft lurn<1, li.eepintr \'orrr lcft clbou'in flrnr contirct iritli  vorrr-borlr'.
   If tlle cocl<inr; levct-sirlc is lori'ertrl. lrr-rnlv cl:rrn1t tltc c:ultel-tr ltctn'cerr tlie b:rsc of  \'oLtl'
right tlittttib:ittcl \.oLlr lingcrs. 'I'he slrutter lrutton is ol)cl':rtt:(l ltl' the rirht  thrrnrb, ri'hile
)'otlr right elitorr,' sltot-rlcl bc keyrt tiuht ugtrinst ]'orlr bocll'. \-otr left h:rnrl straclies tlte cutttct'a
frottr;tltovc, u'ith the inclex <tr rtriclcllc linger turning the focusing ring (6).

FOGUSING
  Focusing is done by turning the focusing ring (6) while sighting your subject through
the eyepiece (3). While it is easier to sight and focus at full aperture, you may wish to
know how much focusing tolerance (depth of field) you have at the aperture setting you
have selected. Actual picture-taking conditions can be immediately checked merely by
pressing the aperture lever (7) to close down the iris diaphragm to the pre-set aperture size.
 When the subject-matter is too dark. fot accurate focusing by sight through the viewfinder,
set measured or judged distance on the distance scale (9), and note available depth of field
(focusing tolerance) bV means of the color-coded depth of field scale (10). The colorscor-
respond to those of the aperture scale on th-e aperture ring (5). For precise depth of field
computations, consult the depth of field table.
  NOTE
  Color-coding of the aperture scale (5), depth of field scale (10) and the exposure meter
  dial (18) is as follows:

UNTOADING FITTI
  When you have taken the number (eith er 20 or 36) of pictures available on your film,
stop trying to squeeze in any more. Rewind your exposed film into its safety cartridge
before opening your camera.
   l.  Press sprocket release button (20), making sure it remains depressed. Erect rewind
crank (12), and turn clockwise in the directfln indicated.
  2. When the end of the film separates flom the take-up spool (15), you will sense this
by feel. Do not wind film fully into the safety cartridge. Open backlid, pull out rewind
crank (12) and remove safety cartridge. The depressed sprocket release button (20) will
return to normal position automatically upon operation of the cocking lever [).
  CAI'T!ONs
           the end of your film (sometimes before the film counter (8) indicates the full U  If at
  number of frames available) the cocking lever (1) Jams part way through its stroke, do
  not force. Press the sprocket release button (20), and complete cocking action. Rewind
  filrn into safety cartridge.
                cocking lever is forced, the film may be stripped or the end may come .2) If jammed

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     I          loose out of the safety cartridge making it impossible to rewind. If this happens, and
         you wish to save your film, open camera only in complete darkness.
                        SYNCHROFTASII PHOTOGRAPI{Y
         This camera is provided with a synchroniztng mechanism for setting off photoflash
         simultaneously with the action of the shutter. Since there is no provision made for
        time lag, accurats synchronization  is possible with electronic flash (strobo) at all shutterspeeds,
       and with class M and class F flashbulbs up to speeds of li30 and l/60 second respectively.
        On the front of the camera, there is provided a synchroflash socket (21) of the JIS-B
.f       type (German type).
        To mount flashgun on your camera, screw adaptor into the accessory mount socket (23).

                              SPECIAL ACCESSORIES

         Lens Hood (with leather carrying case)  ; Filters (Toshiba screw-in type, 40.5 mm diameter)  ;
      MAMIYA BC III flashgun.
          I          In preparation: PROXAR auxiliary lens for close-range photography (.55 to 1 meter range)  ;


          I                I       Conversion Lens for portraiture (focal length increased to 65ffiffi, magnification x1.36).


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