Minolta Flash Meter User manual

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   MAJORFEATURES


                     l .     Remarkably accurate thanks to  ideal combination of special
                electronic circuits and high-stabilitycomponents

                   * High light responsewith Silicon Blue Cell

        2.     Quick, simple operation

               x Compact and  light weight since  it uses allsilicon transistor
                printed circuits

               x Electronic indicator needle lock  for  convenient, accurate
              reading

               x Selectionof measuringtimes (shutter speeds)for easy measure'
             ment of fill-in flash light in combinationwith ambient light                 *1

               x Easy, drrect reading of F number......no conversionfrom EV
             number needed

               x Scale illuminatorfor easy reading under dim light conditions.

               x Reflected-lightmeasuring attachment available

        3.     High reliability and durability with diecast aluminum body,
                h e r m e t i c a l l y s e a l e d e l e c t r o n i c c o m p o n e n t s , a n d p r i n t e d
                   circu its

          4.     Accessoriesavailableto satisfy a wide range of requirements.





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FLASHMETER


  SPECIFICATIONS


    T y p e :        Incident-light measuring type, equipped with reflected-
                    light measuringdevice,to measureelectronicflash, bulb
                   flash, fill-in flash, and ambient light
    Receptors: For incident light ...... sphericalor flat type
                 For reflectedlight ...... receptor-viewfinderwith 10" angle
                                             of acceptance
                 Photocell          Silicon Btue Cell
              Responsetime ...... 10 micro-sec.
    Measuring range:    Incident  light ...... 22 - 28OOlux.sec.
                         Reflectedlight ......   I  -  128 cd. sec./ma
    S c a fe s :    A S A                   . . . . . . L 2 -  1 6 0 0
                F number                    f  -  L28
           M e a s u r i n gt i m e  . . .     l / 3 0  - L / 2 5 0
     Electronic circuits  :  All silicon transistor printed circuits
                           Electronicindicator needle lock                                                   l                                                           '    Power source:      For measurement        ... five 1.35v mercury
                                                        batteries
                        For scale illumination...... one 1.5 v AA-size
                                                       penlite battery
    Other:      Battery check, scale illuminator
    Accessories :  Reflected-lightReceptor-Viewfinder,Synch.Cord,ND 16X
                      Filters for both incident and reflected light, Spherical
                and Flat Diffusers,Hand Strap, and CarryingCase.
    Size and weight :     131 mm (H)x72 mm (W)x35 mm (D), 340 grams
    Optional accessories : Pin-pointReceptor,
                  M icro-diskReceptor,
g,/-lt &' dt//                           2 " Reflected-lightReceptor,
                        and Soft Case

2.   Setting ASA Film Speed

        ( 1 )  L o o s e nA S A s c a l e n u m b e r l o c k b u t t o n
         by turning it counter-clockwise.

      (2)  Turn ASA number setting knob to set
         required number on scale.
      (3)  Lock  it with ASA number scate lock
          b utton.
        Do not attempt to changeASA number
       wh ite scale is locked.




3.   Setting Measuring Time (ShutterSpeed)

    Turn measuringtime selector and set  it at
         t h e  v a l u e c o r r e s p o n d i n gt o    t h e  s h u t t e r
    speed you intend to use on your camera.
    When using other than FP-classflash bulb,
     set time at 1/30 sec.




4.   Connecting Synch. Gord

        ( I )  Insert synch.cord plug into synch. cord
                        j a c k o f  t h e F L A S H M E T E R .
        ( 2 ) C o n n e c ts m a l l e r s y n c h . c o r d  t e r m i n a l
          with your f lash cord plug. (lf your f lash
         cord is long enough, you can connect
             its plug with synch. terminal of the
       FLASHMETER.)Thenconnectlargerone
          with camera synch.terminal.

MEASUREMENT


     Incident Light  of  Electronic Flash

      (1) Screw either Spherical or Flat D,ffuser
          into receptorring dependingon measur-
          ing purposes. (SEE NOTE.)
      (2) When using Spherical Diffuser, point
         the FLASH METERtoward your camera
         from subjectpositionand push measur-
          ing button.
      (3) Meter respondsimmediately(10 micro-
          sec.) and needle remains at F-number
          re a d in g ca lle d for  by  light volume
        measured while the  button  is  kept
        dep ressed.
      (4) Set the indicated F number on your
         ca me ra .
      (5) Connect the flash with your camera.
       (6) To measure illuminationlevels, set measuringtime at I/30 sec. and
         press measuring button to  measure light available. Then read
         referencenumber below the F number and refer to conversiontable
         below.

N O T E :
         'F To obtain illuminationvalue, Flat Diffuser should be used.
            *i Sperical Diffuser is for ordinary photographicpurpose.

             eference
               n u m b e r
       Receptor
        FL A S H ME TE R                      660 L,3202,6405,280 10,56021,L2042,24084,48         w/Flat Diffuser
       M icro-Disk                         4 1 . 3  82.5  1 6 5 330   660  L,320 2,640 5 , 2 8          1 H Receptor
        M icro-Dlsk    20.6  4 1 . 3  82.5  165   330   660  L,320 2,64          2 H Receptor

                 Fig u re s : Luxes
              To obtain lux.sec.,divide figure by 30.

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*   lf needle remains in red zone at  right, decrease light falling on
         subject by:
      (a)  increasingflash-to-subjectdistance,
      (b)  coveringflash with some translucentmaterial,
      (c)  giving less measuringtime  if there is any ambient light,
      (d)  attaching ND filter.
        x Be sure to keep measuringbutton depresseduntil reading is no longer
         needed.


3.    Fill-in Light  with  Electronic Flash

         Beforeconnectir\gwith flash, set required measuringtime (and shutter
         speed) and use FLASH METER as an ordinary exposure meter (see
          bellow) to measure ambient light volume on parts of subject other
         than those to be filled in.
        Then connect flash with FLASH METER and measureflash light volume
         on the parts you want to  fill  in.  lncrease or decrease flash light
           falling on subject until required F number is obtained on scale.


4.   Bulb Flash Light

         Set measuringtime at 1/30 sec. when using other than FP-classbulbs.
         Other procedures are the same as when using electronic flash.


5.   Wireless Remote ("Slave")  Flash

       FLASH METER can also be used for ordinary operationwith multiple
          or "slave" flash units in the same way as describedabove.


6 .      an Ordinary Exposure Meter

        Make sure measuring time selector and camera sh utter are set to
        same speed. Then push measuringbutton and set your camera to
         F number indicated.

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USEOF OPTIONALACCESSORIES

   ND Filters
        These filters are used when indicator needle remains in right red
        zone of scale, showing that there is too much light to measure'
          * For incident-lightmeasurement,remove
             diff user and screw in  glass-type N D
           Filter instead. Then screw the diffuser
         onto the ND Filter ring.

         T o m e a s u r e r e f l e c t e d   l i g h t , s i m P l Y
        screwon diaphragm-typeND Filter over
          the  CdS-cell window of  the receptor-
         viewfinder.

         Since these ND Filters have a 4 EV
                ( 4 - s t o p ) e x p o s u r e  f a c t o r , a d d   t h e
         equivalent of 4 stops' exposureto the
         value shown by indicator needle or set
       ASA number 4 steps higher than that
           of the film in use and use F number
         thus indicatedby needle.




2 .   Pin-Point Receptor

         This receptoris used primarilyto check
          subject light  distribution on camera
        ground glass.

         ( 1)  Slide Accessory Connector Shoe onto
       FLASH METER accessory bracket.

      (2)  Connect Pin-Point Receptor cord with
          the connector.

                                                                        1 0

(3)  Place receptor in contact with ground
          glass  over  part  of  subject to  be
         measuredand push measuringbutton.
                     I n s t e a d o f  r e a d i n g F n u m b e r , r e a d
          referencenumber below the F number.

          ( 4 ) Then determinef inal exposureby refer-
         nng to conversiontable supplied with
          Pin-PointReceptor.
          ( 5 ) To make most accurate and effective use of this accessory,it may
         be necessary to  determine actual exposure by experiment, since
          variousground glasses have different transmissioncharacteristicsfrom
           the standard used to formulate this table.





 3 .  Micro-Disk Receptor (1 H or 2H)

          This receptoris mainly intendedfor use
        when light  is too weak for measure-
         ment with FLASHMETER'sincident-light
           receptor. lt can also be used to find
           illuminationlevelson small subjectareas
            for various purposesthrough reference
            to the conversiontable.

          ( 1)  Slide Accessory Connector Shoe onto
        FLASH METERaccessorybracket.

       (2)  Connect M icro-Disk Receptorcord with
           the connector.

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FLASHMETER




                         ( 3 ) The 1 H  Receptor is 4 EV more sensitive than the  incident-light
                   receptor on FLASH METER and the  2 H Receptor is 5 EV more
                     sensitive. Therefore, subtract an appropriate number of stops from
                    the number indicated by needle or set ASA number an appropriate
                number of steps lower than that of the film in use.

                 (4) To measure illuminationlevels,set measuringtime at 1/30 sec. and
                   press measuring button to measure light available.
                 Then read reference number located under F-numberscale and refer
                       to conversiontable shown in page 7.


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