Corfield Periflex 3A User manual

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      (l) LEYER CONTROL.  A singlestroke of the operatinglever winds on the film, loadsthe shutter for firing, sets
    the film counterto the next number,and winds down the periscopefor focusing. (Seepage9).
     (2) ACCESSORY SHOE.  Fitmentsshould be pushedright home, pastthe securrty-gripsafetysprings.
     (3) SPEEDS DIAL.  Requiredspeed may be set (or altered) at any time prior to firing. with the shutter wound
    or not, Turn dial either direction to bring speedexactly opposite)> mark. ($tting betweenengravedspeedsdoes
    not give proportionateintermediateexposure). For Time exposures,set to "8"  and use Periflex time-lock cable
    release.
    (4) EXPOSURE VALUE  DIAL.  Using an exposurevalue meter, set shutter on suitablespeedfor subiect. Take
   meter readingand set lensto stop shown againstindicatedExposureValue, (ln illustration,E.V. of 8 with  'l second
    requiresf/l6.  With speedaltered to 1/15th. lens must open to f/4.)

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 (sl .u N IYERSAL vlEwFlN  DER EyEptEcE.   Simply screwins
 in the appropriate viewfinder objective automaticatty'"Oirt.t rhe
viewfinder image_for whatever foca{ length of lens is'used on rhe
camera.  For  infinity - and medium-distance subjects, the- view
embraced by the solid frame (see sketch) will  aipty.'  i6L
seen between  the  fou r  unconnected  corners    ir'  it     p"i"ii"r-"iur"
corrected picture  at 15 x  the  focat length  of the  lens-"    in-use,
9:.8^.'app_rgx. 2'  3"  witlr  the camera's siandard lens, 5, wirh  a
100mm. (4") lens, and so on.
The dotted frame shows the are
periscope focusing, and may  br
pensation at any distance in the
subject in the solid frame and  I
em braced by the  dotted  area..  I
gom Pose the same Part of the s
fire the shutter without  referring
close distances, this  is best per
tilting head.
(5) FocusER   EYEPIEcE"   For focusing operarion, see page 12.

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                                                             (7) PRESSURE  PLATE.   This special glass fitment, which  is specially
                                                 designed to  safeguard films against scratching and static fogging, should
                                              be polished'occasionallywith a soft handkerchief.
                                                          (8) BASE-LOCK   OPEN.   With  tips of fingers, turn  loclcing button  to
                                                   bring black dot and red pointer exactly in line.  Camera back may now be
                                          removed (see opposite).
                                                        (9) BASE-LOCK  CLOSED.   With  finger-tips-as before, separate black dot and
                                              red pointer turning button either left or right as far as it will go.



Page 4

..                                  www.orphancameras.com (t3)  HTDEAWAY" RE\ilTND KNOB
 REWINDING THE FILM
 Push the. transport  lever beyond  its normal
 return pcsition in the direction of the engraved
 arrow on the top plate of the camera body, thus
 automaticalfydisengagingthe wind-cn mechan-
 ism. Raise the rewind lcnob by moving the
 serrated lever in the top  of  it  to one side.
 (Moving this lever alfows the rewind knob ro
spring up to a convenient position for rewind-
 ing.) Turn the knob clcckwise until the frame
counter ceasesto revolve, indicating that the
film  is completely rewound  into  its cassette.
During rewinding, the frame counter indicates
the amount of film which has been re-wound
into the cassette,and it is easy to check when
the re-winding is almost complete. To return
the knob to its flush position, pressthe serrated
lever and push the knob home, releasingthe
lever at the same time.

                                                                                                                                                    l-age   I

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      ( 1 4 ) S H U T T E R  R E L E A S E  B U T T O N .    O u t e r                 ( 1 5 ) s o c K E T    F O R  V T E W F T N D E R  O B J E C T -
   guard ring screws off for fitting Periflex cable release :         IVES.  Interchangeable viewfinder objectives to  suit
    socket  in  button ensures correct  location of cable          the focal length of the camera lens in use are simply
    release nipple.  For shutter  firing instructions, see        screwed in and removed in the same way as the lenses
   page 1 3.                                                   themselves.  (See page 3).
Page 8

(16) FLASH   SYNCHRONTSATTONwww.orphancameras.com
SOCKETS.   An)r standard 3mm. co-axial
 plug, as fitted to most flashguns,will  fit into
these  sockets :   in  general, use X   for
electron ic, M for flashbu lbs, and expose as
per  details given in separate instructions
leaflet on flash with the Periflex.

(17) LENS  APERTURE,  SHUTTER
FIRED.  Focusingperiscopeis out of sight,
as lever wind has not yet been operated.

(t8) LENS  APERTURE,  SHUTTER
\A/O U N D.  The lever-wind has now been
moved, and periscope focuser is in position
for  checking the  lens focus. As shutter
releaseis depressed,the periscoperisesclear
of film gate and triggers off shutter.




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                                                                                                                iitttlL,:t':,,ii::i:,tl





LENS REMOVAL.   This illustration of a Lumax being removed from its camera demonstrates
an error.  Correct  is the method of holding the camera with lens flange towards the body,
protecting the shutter from bright light and the camera interior from blown grit. Wrong  is
removal of the lens by the focusing iaclcet : always grip the main body close to the screlv-in
th read.

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                         cLOsE  FOCUSI NG.   Our  booklet  " Close-ups with
                                                                        )'                                a Periflex   is availablefree on request, and highlights the
                               close-focusingprovisions of the 45mrn., 35mm. and 28mm.
                              lensesin the Lumax range with which, thanks to their Supra-
                            Normal mounting, the subject may be direct focussedfrom
                               as clcse as ca. 9", 6" and 3" rcspectively. (This means, for
                             example, that with the 28 mm. lens, a subject 4" x 3" can be
                         made to  fill the whole of the negative area without the use
                                     of any supplementary focusing aid.)

WIDE'APERTURE \I/ORKING.    All lensesin the Lumax range have lanthanum-conrent
comPonentsand are so designedthat there is little to be gainedfrom stoppingdown apart from
increaseddepth of focus. Do not hesitateto take advantageof their wide ipertures, because
these new-concePtlensesstrikingly demonstratethat the day is past when a fast lens had to be
stoppeddown to f 15.6or belowfor crisp definition.
DEPTH OF FOCUS.  The depth scaleson Periflexlensesare clear and simple to use. For
example,our illustrationshowsthat when the 45mm. Lumaxlensis focusedon 30ft.,everything
between15ft. and @ will be acceptablysharp atf 15'6but at fi2.B the rangenarrowsto between
20 and 60 feet.                                                                                            Page 11

F I R I N G    T H E    S H U T T E R .    T h e                                            www.orphancameras.com Periflex shutcer release has been specially
 designed to  kill one of miniature photo-
 graphy's biggest bogeys -  camera shake.
 In our  illustration, the  right-hand fore-
 finger  is resting on the release button,
 ready to  "squeeze the  trigger",  and  it
 will  be noted  that  pressure  is applied
 parallel to the lens axis, theoretically and
 in  practice the  ideal way  to  minimise
camera movement when   fi ring.  (When
 releasing shutter on slow speeds, it  is
essential to keep finger on release burton
 until shutter is heard to close.)
T R I P O D - H E L D  E X P O S U R E S . W h e n
a tripod  is used firing  is often effected bV
cable release (see 14).  The  Periflex  is
especially suited to  tripod  work,  as the
bush (wh ich includes an adaptor for both
English and Continental fittings) forms an
integral part of the die-cast camera body
The  camera  can  therefore   carry  the
heaviest lenses without  lens ftange/focal
plane collimation being impaired.



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       The famous Corfield Works  in Ballymoney, Northern  lreland, where Periflex equipment  is manufactured and tested
       under the  ,:1ost modern conditions and with  the very  latest equipment by craftsmen of exceptional ability.   All
        enquiries relating to the Periflex, its unequalled range of wide-angle and telephoto  lenses, and its "periflexible"
        accessories should, however, be addressed to
     K. c. coRFtELD   LTD.  33, NEWMAN   STREET,  LONDON    vv.l