IDEAL CAMERA - 02FOR PLATES AND FILM PACKS3 1/2 X 2 1/29 X 12 CM 10 X 15 CM13 X 18 CM User manual

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O--C)r++     @e          *in
    TO USE EITH ER
                         DIS-TAR     zErss PRoxAn ,9.R
                wii.lr ;':unTessan, focus r&griil'iC gli.sgy?:' rl:?                                                                                                                                                                                                                  i a p,tna g m            su p pie m e nta ny    I e ns at$5h-ed1:ihao   . d
        down until desined sha''pness is noted'
                                                         oe        Best results with Pnc "ar or Distar may          obtained with Tessan di:phragmed down to F/B
         or smallen.
         Fronr the chart on illlr psrrspse side select the
         focal length of your,'Tessar and follow the
           honizontal line whlch  ; pplies to the numeral of
         youn Distar or Proxar You will then find:
            The focal length oj,the combined lenses in
          _centimetens  1}.
              lhe reduction or nragnif ication of the object.
        A reduction with Pnoxar, a magnification
                witlr Distar.
           The exposure, A decnease with Proxar, an
              incnease with Distan,
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         Etumple:Tessar'l 5 cm.
                    \I'itti Prorar No. 2. The combined focal
                length would be 12 cm, the reduction O,Bx
            and the time of exposure 0,6x as against              \.',                  1..^  focal length, object size and exposune of             c.
             the Tessan alone.
              V'ith Dislar A'o. 1. The combined focal                     '                length would be 17.5 cm, the magnification                                                                        1 ,4 x  as           1,2x and the time of exposune
              againsi focal length, object size and ex-
             posune of the Tessan alone.
         More detailed information on the use of Proxars
        and Distans may be had on application.


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