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Petri FTX User manual

User manual for Petri FTX. 36 pages in English. Read the original PDF, download or print a copy without registration.

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Brand
Petri
Model / document
Petri FTX
Document type
User manual
Language
English
Pages
36
File size
3.5 MB
Category
Film cameras
Document date
Not specified in catalog

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    TYPE;                  Pentaprism SLR camera with  built-in cross coupled CdS exposure meter
                                       in TTL system.
     F I LM :                35mm. film (20,36 or 12 exposures)
     F I L M S I Z E :           24mm. x 36mm.                                             : .
    S T A N D A R DL E N S :      P E T R I 5 5 m m .  f / 1 . 4 , 7  e l e m e n t s i n 5 g r o u p s ( o r  f / 1 . 8 , 6  e l e m e n t si n 4
                                g r o u p s ) w i t h  f u l l y a u t o m a t i c d i a p h r a g m .
    S H U T T E R :             F o c a l p l a n e t y p e w i t h s p e e d s , 1 s e c o n d t o 1 / 1 O O O s e c o n d a n d B . B u i l t - i n
                                    self-timer
    E X P O S U R ME E T E R       Built-in cross coupled CdS exposure meter in T T L  system.
                           A S A : 2 5  t o  1 6 0 0   ( D l N : 1 5  t o 3 3 ) .
    V I E W F I DN ER            Pentaprism viewfinder with "Micromatic Prism Focusing" device.                                     \
    FILM TRANSPORT     S i n g l e s t r o k e r a p i d f i l m w i n d i n g a n d s h u t t e r c o c k i n g .
    S Y N C HR O NI Z A T I O N :    F P a n d X a u t o m a t i c s e t t i n g . A h o t  s h o e c o n t a c t .
     L E N S M O U N T :         S c r e w m o u n t .
     F I L T E RS I Z E :            5 5 m m . s c r e w - i n t y p e  ( 5 2 m m .  f o r  f / 1 . 8   l e n s )
     L E N S H O O D S I Z E :      5 7 m m . p u s h - o n t y p e ( 5 4 m m . f o r  f / 1 . 8   l e n s )





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DESCRIPTIONOF PARTS





         Film Transport Lever   @  F i l m S p e e d D i a l       CDS e l f - t i m e r L e v e r   c
  @ E x p o s u r e C o u n t e r     @  Film Rewind Crank     @ S c r e w T h r e a d f o r C a b l e R e l e a s e
     €)  Shutter Speed Dial    @ D i a p h r a g m B u t t o n     @ N e c k S t r a p R i n g
  @ Accessory Shoe      @  Shutter Release Button   @ B a t t e r y C o m p a r t m e n t
                                    (o) Self-timer Release Button  @ C o r d l e s s F l a s h C o n t a c t
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@  Flash So c ket            @  Distance Scale
@ Back Cover Lock          @ Depth of Field I n d icator
                    @ Diaphragm Scale
                    @ Diaphragm pin
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@ Viewfinder            @  Film Rewrnd Button
@  Film Cassette Chamber       @ Tripod Socket
@ Sp rocket             @ Auto & Manual Diaphragm Switch
@ Take-up Spool
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PICTURE- TAKINGGUIDE                           1 S E T T H E F I L M S P E E D
                                                      T u r n   t h e   f i l m  s p e e d d i a l a n d  a l i g n  t h e
Th e Pe t ri FTX  h a s b e e n especiallydesigned                                                                                                    r e a d i n g e q u i v a l e n t t o s p e e d o f  t h e  f i l m  i n
so   t h a t  pict u re  t a kin g  is always a simple,              u s e w i t h  t h e b l a c k  l i n e o n  t h e  r i gh t - h a n d
                                                                   s i d e o f   t h e d i a l .uncomplicatedprocedure.Even an inexperienced
p h o t o g ra p h e r will f in d it easy to use because
th ere are so   f e w  st e p s        only  six,  in
fa c t . Ac t u a lly o n ce  t h e  f ilm has been loaded
a n d   t h e   f i l m a n d s h u t t e r s p e e d s e t ,  t h e r e
a r e on l y  t h re e st e p s t o follow in most cases
u n t i l y o u r e a c h t h e e n d o f  t h e  f i l m c a r t r i d g e .
Yo u r c ame ra will a cce p t standard 20  or  3 6
e x p o s ure ca rt rid g e s(otrh e speo al 12 exposure          2 L O A D T H E F I L M
                                           O p e n  t h e c a m e r a b a c k a n d   i n s e r t t h e  f i l mo n e s o c c a s i o n a l l ya v a i l a b l e )T. h e    i n f o r m a t i o n                                                                   c a r t r i d g e .I n s e r t t h e e n d o f  f i l m  l e a d e r i n t o
o n  t h e s e p a g e s i s  i n t e n d e d o n l y  f o r a q u i c k                            t h e s p o o l s l o t a n d e n g a g e f i l m p e r f o r a t i o n s
g u i d e . M o r e  d e t a i l s w i l l  b e   f o u n d    i n   t h e                              t o   t h e s p r o c k e t s p r o p e r l y .
a p p r o p r i a t e p a g e s o f   t h i s m a n u a l .
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BAT T ER YF O R T H E C d S E X P O S U R EM E T E R
The built-inCdS exposure meter is powered with a 1.3 volt mercury
b at t e ry o f  t h e Ma llo ry PX- 625 or equivalent type. T h e b a t t e r y
c o mp a rt m e n t is lo ca t e d on the left-hand front side o f   t h e   t o p
cover. The exposure meter is switched on by a  stroke  of  the
fil m ad v an ce le ve r.Wh en the exposure meter needl e d o e s n o t
r e s p o n d t o a c h a n g e o f  l i g h t c o n d i t i o n s ,t h e b a t t e r y h a s b e c o m e
e x h a u s t e d a n d mu st b e replaced.
U ns c re w t h e b a t t e ry compartment cover with you r   f i n g e r  t i p s
a n d   i n s e r t a n e w b a t t e r y w i t h  t h e p l u s ( + ) u p w a r d , f a c i n g  t h e
b at t e ry c o mp a rt me n t cover, into the battery compar t m e n t .
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  F II-M TRANSPORTL EVER
  W h e n   t h e   f i l m t r a n s p o r t   l e v e r   i s a d v a n c e d , t h e
      f o l l o w i n g t h i n g s h a p p e n s i m u l t a n e o u s l y :
       1. T h e  b a t t e r y  s w i t c h    i s   t u r n e d  o n  a n d    t h e
        ex p o s u r e m e t e r   l s a c t i v a t e d .
      2 . T h e    f i l m   f r a m e    i s   t r a n s p o r t e d  t o    t h e  n e x t
        un e x p o s e d f r a m e'
      3 . T h e  f i l m c o u n t e r  i s a d v a n c e d'
       4. T h e s h u t t e r  i s c o c k e d .
   After the shutter  is released, the battery circuit is
   shut o f f a n d u n n e c e s s a r y b a t t e r y d r a i n  i s a v o i d e d '

  EXPOSURECOUNTER
   The co u n t e r  i s  l o c a t e d o n  t o p o f  t h e c a m e r a b o d y '
       I t s h o w s  t h e  n u m b e r o f   f i l m  f r a m e s e x p o s e d ,a n d
   autOmatiCally reSetS tO  "S " (f Or "Start ") pOSitiOn
   when  t h e b a c k c o v e r  i s o p e n e d . F r a m e s o f  t h e 1 2 t h ,
    2 O t h a n d 3 6 t h a r e m a r k e d  i n  r e d  t o s i g n a l e n d o f
        t h e  r o l l , d e p e n d i n g o n  t h e   l e n g t h o f  t h e f i l m u s e d'
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F I L M S P E E D ( A S A O R D I N ) S E T T I N G
A f t e r  t h e   f i l m h a s b e e n   l o a d e d ,b e  s u r e  t o  s e t  t h e A S A o r D I N
f i l m s p e e d   i n d e x s p e c i f i e d f o r   t h e   f i l m   i n u s e o n   t h e  f i l m s p e e d
sc al e T his a d ju st s t h e exposure meter for the film b e i n g u s e d a n d
a n es s e n t ia l st e p in g etting properly exposed pict u r e s .
T o s e t t h e  f i l m s p e e d ,t u r n  t h e  f i l m s p e e d d i a l a n d a l i g n t h e  r e a d i n g
e q u i v a l e n tt o  s p e e d o f   t h e  f i l m   i n u s e w i t h  t h e b l a c k  l i n e o n   t h e
r i g h t - h a n d s i d e o f  t h e d i a l D o n o t s e t  i n b e t w e e n c l i c k - s t o p s .
T h e w h i t e n u m b e r s r e p r e s e n t A S A v a l u e s a n d  r a n g e f r o m A S A  2 5
t o  1 6 0 0 , a n d  t h e  r e d n u m b e r s r e p r e s e n t D l N v a l u e s r a n g i n g f r o m
D I N  1 5   t o  3 3  R e a d t h e   i n s t r u c t i o n ss u p p l i e d w i t h  t h e  f i l m a n d
s e t  t h e c o r r e c t f i l m s p e e d  i n d e x n u m b e r  l f  t h e n u m b e r o f  t h e  f i l m
s p e e d c o r r e s p o n d i n g t o   t h a t o f  y o u r  f i l m   i s n o t a v a i l a b l eo n   t h e
fi l m s p e e d sca le , u se the closest number and ne v e r s e t b e t w e e n
t w o  s e t t i n g s F o r c o n v e n i e n c e ,t h e p o s i t i o n s f o r  r n t e r m e d i a t ef i l m
s p e e d s a r e s h o w n o n l y b y d o t s S e e  t h e   i l l u s t r a t i o n .
ASA        2 3 O O 5 0 O O l o o O O 2 o o           o   o 4 0 0 0 0 8 0 0       o o           r 600
N U M B F R S S H O W N :    :               :
        BY DOTS 32  40     64  80     125  | 60     250 320    500 650           | 000  I 250

D I N       1 5  o o t s o o        2 1 o   o   2 4 o   o   2 t  o o 3 0     o o       33
N U M B E R S S H O W N       :               :       :
        B Y D O T S 1 6   t 7             t 9  2 0       2 2   2 3        2 5   2 6     28 29      3 1   3 2
                                                                                        r0
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SHUTTERSPEEDDIAL
Your camera shutter has a range of speeds covering sufficiently all the
ordinary picturesituations.lt has the settings of: 1/1OO0,1/5OO, 1/25O,
 1/125,1/60,1/3O,1/15,1/8,1/4,1/2and  l second and Bulb. When the Bulb
setting is used,the shutter stays open as long as the shutter button is being
depressed(for time exposure).The settings are representedon the shutter
speed dial located right-hand on top of the camera body. For convenience,
only the lower half of the numbers(250 for 1/25O, etc.) and B (for Bulb)
are etched on the black wheel. The shutter speed is set by lining up the
appropriatenumber or B with the black line on the base of the accessory
shoe.Do not Set the shutter speed between two click-stops.The shutter
speed can be selectedeither bejore or after the Shutter has been cocked.
For indoor photography, it is recommendedto set the shutter at 1 /3O or
 1 / 6 0 ;  f o r o u t d o o r p h o t o g r a p h y , a t1 / 1 2 5 o r 1 / 2 5 O : a n d f o r a c t i o n p h o -
tography such as in sports or snap shots it  is important to  use  f aster
speedsof 1/5OO or 1/1O0O to avoid blurring.
The number "1 5" for 1/15 second is larger than others and painted in
 blue. When using the shutterspeeds slowerthan 1/15 second,it is recom-
mendedto use a tripod and a cablereleaseequipmentSo as to avoidcamera
shake.

t l
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DIAPHRAGMSCALE
T h e  di ap hra g m sca le is located on upper side of   t h e    l e n s
b a rre l .
T h e a p e r t u r e o p e n i n g h a s e i g h t s e t t i n g s ,r a n g i n g f r o m   f / 1 . 4
( s e v e n s e t t i n g s  f o r    t / 1 . 8     l e n s ,  r a n g i n g  f r o m   f / 1 . 8 1,  t h e
m a x i m u m o p e n i n g , t o t / 1 6 , t h e m i n i m u m o p e n i n g .
Settings between f/stops are also possible.




AUTOMATIC/MANUAL OPERATION
           rrA " (sh o rt                                                                                               r r M"The re are                                           f o r Automatic)mark in green an d
( sh o rt f o r Ma n u a l) ma rk in red on the underside of   t h e   l e n s
b a rre l .
M ov e  t h e a u t o & ma n ual diaph ragm switch @ to the   l e f t ,
a nd y ou will se e  t h e d iaphragm is set at  "A" posit i o n . T h i s
is t he no rma l p o sit io n f or most circumstances.With  t h e  " 4 "
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www.orphancameras.com     VIEW FINDER AND FOCUSING

t I
    UPRIGHT.UNREVERSEDIMAGE
     As a 3Smm single lens reflex camera, the  Petri FTX uses a
      mirror as part  of  its optical system to transfer the image
      entering the lens to  the viewfinder. In the process,the image
     which is originally reversed and inverted when   it enters the      lens is reversed and turned  right side up so you see the   tu
      picture in the viewfinder exactly as your naked eye would.
        {(FmZ

    MICROMATICPRISM GRID
      Petri FTX has the original Petri Micromatic Focusing system
       for  fast and accurate focusing.The precisionfocusing elements
       in the viewfinder consist of a group of more than 8OO micro-
     prisms as shown in the center of the picture. As you  look
     through the micro-prism area @  in the viewfinder, you can
     see the subject clearly, ONLY when   it  is correctly focused.
      Rotating the focusing ring you will notice the appearance of

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EXPOSURECONTROL                    www.orphancameras.com

COUPLEDCdS METER
 The CdS meterof your Petri FTX camerais coupledto                                               1
 the lens aperture, shutter speed and film speed settings.
 A  c h a n g e   i n   t h e  s e t t i n g o f  a n y  o n e  o r m o r e w i l l , therefore, alter the meter reading.  lt  is preferable, of                                                 l
 course,to change either the aperture or shutter speed
  if an adjustment is required. The  film  speed  setting                                                                       OVE R
 s h o u l d a l w a y s b e  t h e o n e  f o r   t h e  f i l m y o u a r e u s i n g .
 By advancing the  film  transport  lever, the  battery
 switch is turned on and the exposure meter is activated.
 K e e p y o u r f i n g e r o n  t h e d i a p h r a g m b u t t o n @ .( W h e n  t h e
 d i a p h r a g m i s b e i n g s e t a t  t h e m a n u a l o p e r a t i o n ,t h e r e
  is no need to press thebutton.Referto AUTO/MANUAL
 O P E R A T I O Na t p a g e 1 2 . ) A n d s w i n g t h e d i a p h r a g m s c a l e
 @. When the exposure meter needle is centered, the                          PROPER
 setting is correct.
  lf the lens aperture is too  large or the shutter speed                                                                                  f,   t o o s l o w  f o r   t h e  a v a i l a b l e  l i g h t , t h e  n e e d l e    i n    t h e viewfinder will be above the  circle and indicate that                                                            'l
 the picture if taken, will be overexposed.
  lf the lens aperture is too  small or the shutter speed
 too fast for the available light, the needle will be below
 the circleto indicate that the picture will be underexposed.                             UN DER
  t 7
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TO ADJUST THE EXPOSURE
CONDITION                                                       of  the  subject and  your main subject is
                                                                      c o m p a r a t i v e l y d a r k e r t h a n  t h e b a c k - g r o u n d ,W h e n  t h e ma in su b je ct of the whole picture
                                                                                                               it  is recommended  to  adjust th e exposurea re a y o u f ra me in t h e viewfinder is extremely
                                                                      c o n d i t i o n . T h e p r o c e d u r e i s s a m e a s r e q u i r e dd a rk or b righ t , it is re commended to adjust
                                                 w h e n   t h e    i m p o r t a n t s u b j e c t i s d a r k . ( R e f e rt h e e x p o s u r ec o n d i t i o n s o t h a t t h e  i m p o r t a n t
                                                                                                                              t o T O A D J U S T T H E E X P O S U R EC O N D t T t O N )subject is correctly exposed.
                                                         F i r s t , s e t  t h e e x p o s u r e  i n  t h e n o r m a l w a y .lf   t h e    i mp o rt a n t su b j ect  is comparatively
                                                 R o t a t e  t h e  d i a p h r a g m  r i n g   t o    t h e   r i g h td ark , s et t h e  f / n u mb e r at a half or one stop
                                                               a n d  s e t   t h e   f / n u m b e r  a t  a  h a l f o r  o n ec l o s ert o  t h e f u ll a p e rt ure than the  f lnumber
                                                                      s t o p  c l o s e r  t o    t h e   f u l l a p e r t u r e t h a n  t h e i n d i c a t e dw h e n  t h e e x p o s u r e m e t e r n e e d l e
                                                                                                                              f / n u m b e r     i n d i c a t e d w h e n    t h e  e x p o s u r eis c en t ere d .
                                          m e t e r n e e d l e  i s c e n t e r e d .lf  t he s ub je ct is b rig h ter, set the   f lnumber
a t a h a l f o r o n e s t o p c l o s e r t o  t h e m i n i m u m
a p e r t u r et h a n t h e f  l n u m b e rn o r m a l l yo b t a i n e d .
F or e x amp le ,wh e n yo u take a portrait with
a  b a c k - g r o u n d o f  s n o w  s c e n e o r o n   t h e
be a c h, yo u ca n  g e t  a  properly exposed
p i c t u r e b y u s i n g a h a l f o r o n e s t o p w i d e r
a p e r t u r e o p e n i n g  t h a n n o r m a l .

SHOOTINGAGAINST THE L IGHT
W h e n  t h e    l i gh t   i s a v a i l ab l e  f r o m  t h e b a c k               N O R M A L L I G H T I N G   B A C K L I G H T I N G
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F I L M  L O A D I N G
PETRI FTX  accepts the standard 35mm car-      c a r t r i d g e . L o a d  t h e  f i l m  i n a s h a d e , u s i n g y o u r
tridges contain ing 12, 20 or 36-exposure lengths    body with your back to the sun as protection if
of film. Avoid direct sunlight falling on the film      y o u h a v e n o o t h e r m e t h o d .





1 . T O O P E N T H E C A M E R A B A C K    2 . T O P U L L O U T T H E K N O B       3 . F I LM L O A D I N G
Pull down  the  lever with your     Pull out the film r e w i n d k n o b o n    S l i p t h e  f i l m e n d  i n t o a n y s l i t o n
t h u m b n a i l a n d o p e n  t h e c a m e r a    top  of  the  ca m e r a . T h i s   i s  t o           t h e   t a k e - u p s p o o l a n d  s l i d e  i t
b a c k . A t  t h e sa me t ime, the ex-     allow the  f ilm cassette to be put    down toward the bottom of the
posure counter automatically re-     into the casset t e c h a m b e r .           c a m e r a b o d y ,  a n d  c h e c k   t h a t
           rrS "
tu rn s    t o        (wih ch  means                                          the  film perforation is properly
" St art " ) p o sit io n .                                                        e n g a g e d  w i t h     t h e    t o o t h  o f
                                                                                  c a m e r a s p r o c k e t .
                                                                                    20
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4  T O A D V A N C E T H E F I L M         5. TO CLOSE THE CAMERA    6. TO RELEASETHE SHUTTER
Ad va n c e  t he   f ilm a d va n ce lever     BACK                   AND ADVANCETHE FILM
a  lit t l e an d se e  t h a t   t h e film is   The camera back will be locked    Repeatthis action twice, and you
fastened round the take-up spool,    with a snap by a slight pressure.   are ready to takb yourfirst pic-
b e fore c l osin g t h e ca me ra back.                                            tu re.
    N O T E . I n ca se t h e  f i lm rewind knob does not turn counterclockwise by advancing the film advance
              le ve r, it sh o w s that the   f ilm is not prope r l y  t r a n s p o r t e d . O p e n  t h e c a m e r a b a c k a n d c h e c k
            the take-up sPool.
2 l
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            T h e d e p t h o f        D E P T H O F F I E L D
                               f i el d z o n e             A lens that can be focused lets you accentuate the important image
                 h-                   *l                                                 in a picture,while it can de-emphasizeirrelevantobjects in f ront of and
                                    behind the ma i n s u b j e c t b y  t h r o w i n g t h e m o u t o f  f o c u s . T h i s i n v o l v e s
                                    what  is known  as  " Depth of Field". The  smaller the aperture is
                                         the more the depth-of-field increases.
                     HOW TO READ THE DEPTH OF FIELD
                                   The scale is e n g r a v e d o n   t h e   l e n s b a r r e l o f  y o u r c a m e r a a n d
                                          indicated in black lines spreading out both sidesof the index marker
                                                at the center . S i m p l y f o c u s t h e   l e n s  i n  t h e n o r m a l w a y , a n d e a c h
                                           p a i r o f b l a c k l i n e s w h i c h p o i n t s t o  t h e d i a p h r a g m s c a l e i n d i c a t e s
                                          the depth-of - f i e l d z o n e c o r r e S p o n d i n gt o  t h e d i a p h r a g m y o u s e t .
                                        For example ,t h e d e p t h - o f - f i e l d z o n e f o r  t h e s t a n d a r d 5 5 m m  l e n s
                                                      is indicated a s  f o l l o w s : W h e n  t h e  f o c u s i n g d i s t a n c e i s 8  f e e t a n d
                                                                                     t h e  t  l l l     i s s e l e c t e d ,o n e o f  b l a c k l i n e s a t f 1 1 1p o i n t s t o 6 f e e t , t h e
                                       nearest point s t i l l i n  f o c u s , a n d  t h e o t h e r p o i n t s t o a p p r o x i m a t e l y
                                           1 2   f e e t o n  t h e o t h e r s i d e , b e i n g  t h e  f u r t h e s t d i s t a n c e i n  f o c u s .

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FLASH PHOTOGRAPHY
When the exposure meter needle in the viewf ind-
e r s t a y s b e lo w t h e circle (see page 17)and even a
larger aperture opening and slower shutter speed
can never make  it come up  into the  circle  it
sh o w s t h a t   t h e  lig h t in g condition  is too  poor
and that you must switch to  f lash photog raphy.
Photography with   f lash not only extends your
picture possibilities g reatly but adds excitement
and d rama to  your  pictures. The use of    f lash
equipment with your camera is relatively simple
becauseit has built-in synchronization. lt is equip-
ped with  X  synchronization. Therefore, both
electronic flash and  ordinary single-exposure
 f lashbulbs ca n be used .



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 Petri FTX   is eq uipped with both  a  " hot sh oe"     u n i t h a s a c o r d , s i m p l y p l u g t h e c o r d  i n t o  t h e  f l a s h
 contact for cordless unit and a standard PC termi-    socket @
 n a l f or o n e  t h a t h a s a cord.  lf you use a cordless   When using F class, M class and FP class flashbulbs,
 u n i t , me re ly slip t h e  f o o t of the unit into the shoe     or a n electronic f lash unit, shutter speeds must be
 on top of the camera body and  it will automatically    s e l e c t e d a c c o r d i n g t o  t h e  t a b l e . ( S p e e d s w i t h i n  t h e
 m ak e c o n t a ct wit h   t h e shutter mechanism. lf the    co lo red a rea a re ava ilab le.)





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www.orphancameras.com           FI.ASH PHOTOGRAPHY




EXPOSURECONTROL IN FLASH
PHOTOGRAPHY
I n  f l a s h p h o t o g r a p h y  t h e e x p o s u r e m e t e r c a n       For example, in case a flashbulb of the FP class
n o t b e u s e d . T h e e x p o s u r e d e p e n d s o n   t h e                  i s u s e d a n d  t h e g u i d e n u m b e r c o r r e s p o n d i n g
s h u t t e r s p e e d , t h e a p e r t u r e o p e n i n g ,  t h e  f i l m              t o   t h e A S A ( o r D I N )  i n d e x a n d  t o   t h e s h u t t e r
s p e e d a n d  t h e d i s t a n c e o f  t h e   l i g h t f r o m   t h e      speed selected is supposed to be 74, then the
subject, but if the shutter speed is constant and               f / n u m b e r ,  i f t h e  l a m p - t o - s u b j e c td i s t a n c e i s 1 O
also the film speed is assumed to be constant,              f e e t , w i l l b e a b o u t 8 , b e c a u s e 7 4 = 1 O : 7 . 4 = 8 .
t h e n t h e f / n u m b e r r e q u i r e dv a r i e s a c c o r d i n g t o      No great accuracy is requiredin this calculation,
t h e   l a m p - t o - s u b j e c td i s t a n c e . I n a n o t h e r w o r d ,       a n d a q u i c k m e n t a l d i v i s i o n w i l l g i v e a n f / n u m -
f o r a n y g i v e n s h u t t e r s p e e d a n d f i l m s p e e d , t h e       b e r  f o r a n y d i s t a n c e . I n a l l c a s e s , t h e n e a r e s t
p r o d u c t o f  t h e a p e r t u r e o p e n i n g a n d  t h e   l a m p -       c l i c k - s t o p o r 1 / 2 s t o p w i l l b e c l o s e e n o u g h f o r
to-subjectdistancebecomes a constant, and this       a practical rnork.The guide numbers are usually
c o n s t a n t  i s c a l l e d t h e G u i d e N u m b e r . T h u s , t h e                  i n d i c a t e d o n   t h e p a c k a g e s o f y o u r  f l a s h b u l b s
f / n u m b e r  i s c a l c u l a t e db y t h e f o l l o w i n g f o r m u l a .       o r   i n  t h e   i n s t r u c t i o n m a n u a l o f y o u r s t r o b o .
     G u i d e N u m b e r : D i s t a n c e x   f / n u m b e r
             G u i d e N u m b e r
           f /number:
                D i s t a n c e

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 HOW TO USE THE BUILT-IN SELF-TIMER
 S w i n g t he se lf -t ime rle ver in the direction indicated by  t h e a r r o w
 as illustrated. Release the  self -timer release button @, and the
 fr a m e w i l l b e e xp o se d a fter a delay of approximately 9 s e c o n d s .
 The self-timer can be set at between positions(within the range
 of solid line)so as to shorten the release time and also be set
 e it h e r be f o re o r a f t e r advancing the  film. AII shu t t e r s p e e d s
 except B setting ca n be used with th e self-time r.
 The s el f -t ime r is u su a lly used when the photographer w a n t s  t o
 jo i n a g ro u p wh ich h e  is photog raph ing.  lt  is also u s e fu l  f o r
 p h o t o m i c r o g r a p h yo r w h e n u s i n g a  l o n g f o c a l  l e n g t h  l e n s . I n a l l
 cas es t he  u se o f a  t rip od is recommended.


 INFRA-REDPHOTOGRAPHY
 When taking infra-r.ed pictures, reset the focusing distance to
  t h e  r e d l i n e i n d i c a t e db y  t h e a p e r t u r et / 4  ( o r f / 1 . 8 ) o n  t h e d e p t h
 of field indicator @.



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