UTILO MINI Light Meter User manual

quired. Remernber that exposuresOpen FULLY the flap €over wirich                                     longer than 7/25th s,econtl necmsit-protects the ligirt-sensitive  cel]                                   'When                                 ate the use of a tripod.when the meter is not in use. Decide                             FILTERS are used, allowance mu-st                   you                speedupon     the shuttsr                              Prefer                         be rnade in  either the shutter  .                                      ca-                    movie   e,mploy              a           (or, withto                                 speed or in the lens aperture somera, the number of framcs Per                                       the exposure is increased ltysecond), and turn the dial until       t_hat                                  the amount of the ,,filter factor;othis speed is opposite the sPeed                                   of the filter employed. A 2X fiitervalue of the film. The meter is now                             would require eittr,er one stopready for measuring the exposure.                                 larger than the correct settingPoint +he meter at the sceno or                                      without a liilter at the same shutterobject,Eand the needlo will indicate                             I    speed, or twice the exposure tinrethe correct stop to us€,. If   the                                  with tho same diaphragm' setting.ne'edlo stops between two stops,                         A 4X filter needs two ,stops largerthe aperture indicator of the oamera                                                            times the exposursmay be set correspondingly, or at      aperture or four                                   time required without a filter. Itthe nearest stop nurnber.                                                                         eachIf a fast film is being used in verY     should be remembered thatbright light and the meter intii-      larger aperture (smaller number)                                                              as thecates a s'maller stop (greater nulll-      admits twice as much light                             one before. For erx&mple, if  theber) than is to be found on the lens,                                      nreter ca.lls for an exposure ofit will be necessarv to use a higher                                                                  anyshutter speed. If a large'r stop      1/100th second at f/8 wjthout                                                         filte.r, and a 2X filter is used, the(lesser number) than the rnaximum                                       setting rvould be either Ub0l."ln ataperture of the lens is needed,                                         f/8 or 1/100th at f15.6.a slower shutter speed will be re-www.butkus.us

CINE PHOTOGRAPI{Y
                                       Correct exposure for motion picturs
                                     cameras is d'etermined in the s&ilre
                                       wa)'. The number of   f rames per
                                            se'cond at which your camera oper-
                                   ates (in the small circle) is  set
                                         opposite the sec. speed of the filrn
                                         in use. The needle .will then show
                                   the proper aperture at which the
                                         diaphra,gm should be,set.
                                          Sorne movie ca,rneras have & smalier
                                   opening in the shutter disc and
                               make individual exl.osures of about
                                                                       1i 50th of a second. \Yith such ca-
                                        mera,s the numbers in the circle's
                                    are ignored, and the ilS?,th mark
                                                               tr'igure 2.
                                                          If a lilm rated at 26 degrees is
                                 being used, and it  is desired to
                                   give an exposure of  1/5t)th,-rf a
                                         secoud, a touch of a fin ge r nloves
                                    the 7150 on the dial to the' 26 lilrn             Fig. 2                      spe,ed marking. Th: indicator now
l/rilth Sec. Film Spt    260 Scheinerwww.butkus.usshows tire . .rper stop to be f/8.