British Kinematography (1950)

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Feb., 1950 ADVERTISERS ANNOUNCEMENTS 65 xposures for outdoors, indoors, lack and white and colour ie S.E.I. Exposure Meter is easy to use. The ightness of a comparison spot in the centre of e viewfinder is matched with the selected part ' the subject by turning a knurled ring which rries the / number and film speed number ales. The exposure time is then read from a ^ed scale on the barrel of the instrument. The mp illuminating the comparison spot is indardised against a self-contained photo-cell id readings are thus independent of battery •ltage, age of lamp, or eyesight variations. STRiBUTED BY:— ILFORD Accurate Light Measurement FROM 0*01 TO 10,000 FT. LAMBERTS en a sfxrfr " • I to know more about the S.E.I. Exposure Meter, ■d for the free illustrated descriptive leaflet. ; The SEI Exposure Photometer Made by Salford Electrical Instruments Ltd. ILFORD LIMITED ' ILFORD