Zeiss Ikon Exposure Settings User manual

No. IV              Lighting
 Objects,  which   in  the shade, when   ttre sun  ehines,  are not  direc-tly  struck  by
the  light  rays, come within  2 (slightly  clouded)  unless  Table   II,  (diffirsed  light)
 is already  used
      Sunny                    skv      Skv      skv     Dark thun-
 with  white  clouds     Sunny       slightly      rather     strongly     der-storm                                      overcast    clouded   clouded      clouds

No.V             Diaphragm
                               2       2.8  4   5.6 e  rr  l6  z2  32                                                                  I                              1 . 8 2.2 2.7 3.2 4.5  6.3  e       18  25  36                                           112.5
            o                   lrl2          a lroltrltnl'ul"
No. VI         Exposure Time

Total                      relrs
Seconds              rltwlrltn                        Voolvolveolrulrls rlnlve
                           oslselrrlmloe
Seconds   wlvclv,      t          r o u      t2  15 zslsolso                  lv, l   ltt,lrl     l   I  It
Total        mlrr es                          I eolnrl*l eelsolsrlszlsols*lsssolszl*lsslco
Minutes             Irlz       4 1 6               50l60le0lr20l 180
                 Irow  to use  it   (t.,n'jl''J5'''''l                                                               \*"
Take from Tables   I  to V the  red numbers   respectivelyr*ttre   total sum  of which
gives  in  table VI  the  time  of exposure;   e. g. intcnded  exposure:  End  of May,
fore-noon  l0 o'clock  (Table   I No.   t  ), landscape  with   foliage  in the  fore-ground
(Table   Ir  No.  8 ),  dryplate  l7o Scheiner  (Table    III  No. 3  ) sunny  sky  with
white  clouds  (Table  IV  No.  0), and diaphragm   fl19  (Table V  No.  te).  Values
                                                   l + 8 + s + 0 { r 4 = z o
No.  26 in  table VI  indicates   l/o of a second as the  correct  exposure  time.
Zelss rkon  Fllms  1?/180Sch. (350/5000r:I"&D.)    wrth  ye110w  filter
     lncrease  of exposure  tlme:   llght  3tlmes,  medlum  Sflmes

The  figures  indicated   in  this                 especially   to  countries  situated  at
             follows:
In  the  North   from  300 scptentrional   latitude,  as,  for  examplc:-
            Europe,  Siberia,  China,  Japan,  North   Africa,  U.  S. A.,  Canada.
In  the  South   from  300meridional   latitude,  as, for example:
             Argentinc,   Chili,  The- Cape, Southern  Australia.
Take bne  half  of the values  obtained  by means  of this  table  for the following
             countries:
At the Equator  and northward  as far as 300septentrional   latitude,  aB, for example:
            Mexico,  Sudan,  India,
                in  the months   of  January       F"bru""y____Lt"rgh_
                            December    November     October
at the Equator  and southwerd  as far as 300 meridional   latitude,  as, for example:
            Ecuador,  Venezuela,   Brasil,   Bolivia,   Peru,  South  Africa,  Central
           and  North  Australia,
                in  the months  of   June       May           April
                           Julv        August     September

              Flash - light table
in{icating   the  quantity   of powder   to  be used  (in  gramms)   for  dry-plates
Scheiner  170.   Take  half  for  200 Scheiner,  and  double   for  l4o  Scheiner.

    Distance                      Diaphragrn   from  flash
    to  object       F : 4          |  F : 5 . 6     F : 8      F : 1 1      F : 1 6      Fz2i2
    m          F:4.5    |  F:6.3     F : 9       F: t2.5    F : 1 8     F:25
     1.00        0.15     0.30      0.60            t . 2       2.5       5.0
     1.50        o.22     0.44      0.90      1.8       3.5      7.O
     2.00         0.30      0.60       t.2       2.5       5.0      10.0
     3.00         0.44      0.90      1.8       3.5      7.O     14.0
     4.00         0.75      1.5      3.0       6.0       t2.6      24.O
     5.CX)        1.0      2.O      4.0       8.0      16.0     32.O
    10.00         2.5       5.0      10.0      20.o      40.0      80.0

For  all  ki nds  of photographic   work
      the  excellent   Zeiss  Ikon
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H 4216.r60.530                                                                        Din AG

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