VICEROY CDs exposure meter Model 80 User manual

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l)    Diffuser sphere for Incident Light HOW TO USE "VICEROY"
     Meqsurement               EXPOSURE METER MODEL 80      LOW switchD  HIGH
                                                                                                                                         in-3)  EV window                                     l)  Turn the ASA/DIN setfing morker until the                                      dex number of the film looded in your comero4)  ASA/DIN seiting morker                                          oppeors in the ASAiDIN index window. (Slide
5)  ASA index window                      the diffuser sphere over the light occeptonce for
6)  DIN index window                            lncident Light Meosuremenl only).
7)   F-stops                  A  Aim the meter ot the subiect. (Stond close to the
8)   Light index window                          subject ond point the meter toword the comero                                                  for Incident Light Meosurement only).9)   Shutter speeds                                    3)  Press the 'H' switch (high ronge).  lf the meterl0)  Checking mork for Bottery Test           reoding is less thon .l0, press the 'L' switch (lo*
                                             ronge) ond reod the number indicoted on  ihe
il)  Low light ronge scole                     oppropriote scole (block or red). Serious under
12)  Zero index                            or over exposure will resvll, i{ rhe wrong scole
't3)   High light ronge index                     is reod.
t4)   Pointer                                         4)  Turn the shutter speed diol (outer diol) until
                                          the light index number oppeors in the light win-
l5)   Brocket                         dow. Then you con select the desired reoding
l6)   F-stop diol                                from o combinotion of shutter speeds ond F-stops.
t7)   Shutter speed diol                          5)   lf your comero is colibroted  in' the EV-LVS
l8)   Bottery Checker button                       scqle, reod the number in the EV window only.
l9)  Cose setting screw                 6) For movie, reod only the F - stop correspond-
                                              ing to the number of fromes per second.20)  Bottery comportment cop

a

   Checking Bottery  Wein MRB625 1.35V Zinc-Air Battery
      Under normoi condition the mercury bottery (Mollory RM-625 or equivolent) supplied with the me-
       ter hos o life of l*  to 2 yeors. Check the condition of the bottery fronr time to time os fol-
        lows,
       Press the Bottery Checker Button on the bock of the cose without, however, touching the HIGHr'LOW
                                                                                           stops                                                                                                               short
                                                                                                                repl,:ced]     switch.of the B.C.lf themork,botterybotteryis strengthgood, theis pointerinsuff icientwilltorestreochon thethe correctB.C. r mork.meosurementBut if theondpointermusi be
     To reploce the bottery, turn the bottery comportment cop on the bock of the cqse to OPEN.
        lnsert o fresh cell with the plus (l-) mork focing outwcrd ond check it os described obove.
   Zero Point Adiuslmenl
       Occosionolly your meter moy need odiustment. When checking the pointer zero control, the bor-
      tery must be token out of its comportment. The pointer should then come to rest on the zero
      index line ot the extreme left.  lf not, remove the bottom of the cose ond set the pointer to thel     zero mork by turning the zero Adjustment Control Screw either clockwise or counter-clockwise.
n
    Ref lected Light Meqsurement
       This is the most common method of meosuring the light reflected from o subiect to the cqmero
       position. ln this ccrse exposure is controlled not only by the intensity of illuminotion but olso by
      ihe color ond brightness of the subiect itself. This meter will give you the overoge exposure for
      the overoll light received. The bosic methods to be followed ore,
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Comero Position Merhod
t )  Point the meter to the subiect from the comero position.                                                                                                     button)Z) Press the 'H' button (if the' needle does not reoch lO on the H scole, press the L
ond reod the number indicoted.
This mefhod con be used for photogrophing scenery. The normol scene hos no excessive bright-
ness or dorkness. The meter schoulJbe held tS to 20feet in front of the comero position, ovoid-
ing direct lighting from the sky which is for brighter ihon oppeors to the noked eye.
Close-up Mef hod
This method is,recommended for isoloted ports o scene or for portroits. The reoding should be
token very close to the subiect (obout one foot). For controsts, it is preferoble to colculote the
exposure by using the meosurements for both the light ond the shodowy portions.
                    Exomple      lighter  portion --- l5     J5{-:tl                             shodowy portion --- 7
Thus the proper exposure would be ll.  In proctice, however, with block ond white film belter results
will be ochieved  if proper core is foken of the detoils of dorker oreos becouse of the film tendency.
Consequently,  it is odvisoble to wotch the dork oreos ond expose more rother thon too little.
Subsritute Merhod
You will often encounter subiects which it is physicolly impossible to opprooch - subiects ocross
o river, onimols in o coge, etc.-
l)  Choose o suitoble substitute oround you, preferobly opproximoting the color ond brightness
    of the subiect.
2) Toke o close-up meosurement of the substitute porollel to the imoginory line between the
     subiect ond the comero.
In the event you connot find o substitute neorby, your hond moy serve the purpose.
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Incident light meqsuremenl
 This method is used lo meosure only light folling on o subiect ond is olso usdful when it is ififfi-
 cult lo obtoin on occurote meosurement of reflected light. The exposure is determined by lhe ov-
 eroge intensity of the light ond hos no beoring on the color or brightness of the subiect itself.
 l)   Slide diffuser over the CdS window.
 2) Point the meter to the comero position while stonding by the subiect.
 Incident light meosurement  is more relioble for movies, indoor photogrophy, copy work, studio
 work ond for ony controsty scenes which ore intensely bright ond dork.
Advonce meosuremenl
 You will come ocross vorious events in which normol meosuremenls ore impossible to toke.  In
 such o cose it is s,lvi soble to set the exposure of your comero by toking odvonce meosure-
 ments from the sufcject or o substitute. Of course, either the reflected  lisrht or incidenl light meos-
 urement os olreody described moy be used.

                                                                                                                               '.,''l'i. Color  f ilms
                                                                                                    'lii"'i;i In color films, the most occurole exposure is required becouse                                                                        -ia of color film is so
 smoll compored with the block ond white. Thus, the obsolute rt:r,urrrcy of your Model 80 will
 prove to be o greot oid in toking color pictures.
 There ore low serious difficulties in using color films: ofle is the smoll lolitude ond the other is thot
 under different light conditions pictures of the some scene will oppeor in different lones.
 The reoson for this is thot color conditions depend on the color temperoture of the illumino-
 tion. ln generol, blue light shows high color temperoture while red iight shows low tempero-
 lurei  lf the film is exposed under different light conditions, Color negotives con be corrected
 to reproduce the true colors by using correcting filters in lhe printing.

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On the other hond, Reversol .olol. filr  is more criticol. Deviotions from the correct exposure
 will result in tronsporencies lhot connot be odjusted becouse they ore used os color slides.
Do not mix doylight ond ortificiol light. The oddition of ortificiol light brings obout color dis-
lortion thot connot be corrected. For beoutiful pictures, ovoid controsty scenes  if possible. The
difference between the reodings for dork ond light should not exceed 2 steps ot rhe most.
Mointenonce
The Model 80 is o high precision instrument ond should be hondled with core. Avoid sudden
shock ond extreme moislure to prolong the life of your meter.
No other mointenonce is needed sove on occosionol Bottery replocement ond Zero point odiusF
ment. These ore discibed on poge 2 to enoble you to check the proper functioning of your meter.
The Model 80 hc. ue  ' monufoctured with exlreme core.  lt hos undergone  strict inspections ot
our foctory os wei, cr'h^se stipuloted by the J.C.l.l. (Jopon Comoro Inspection Institute). How-
ever, if it should fc. i')  '.i,'6.4?,:le sotisfoctorily, pleose forword it toony fronchised deoler or lo our
foctory together w.lir rhe 1..;,.r'ence number inscribed on the inner cose of the meter movement.




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