The international photographer (Jan-Dec 1933)

June, 1933 T h INTERNATIONAL PHOTOGRAPHER Thirty-three FtlTI ft FACTORS HLTER FACTORS FOR NORMAl DAYLIGHT EXPOSURES ON STANDARD MANOS OF PANCHROMATIC MOTION PICTURE FILM , _, DEPTH Of FIELD 100 MM LENS 1 """"'"""'V."^*"'" " "'" ^ This is the third installment of the Cinematographer's Book of Tables compiled and computed by Mr. Fred Westerberg, one of the technical editors of THE INTERNATIONAL PHOTOGRAPHER. Cinematographer's BOOK of TABLES By FRED WESTERBERG There are several more installments to come, concluding with the November issue, 1933, and when completed the tables will constitute a handy reference guide welcome to all cinematographers, professional and amateur. Take note that the tables are so placed in the magazine as to be easily cut out and bound into a small pocket ring book. Cut down the middle of page 33; then trim top and bottom to fit your cover; punch holes to fit rings on inner and outer edges of magazine pages 33 and 34. When all tables have been bound into your ring book the pages will number from 1 to 32 inclusive with complete index. The accompanying cut is of a Lefax cover. It may be purchased from dealers at 75 cents. 18 ANCLE OF VIEW 35 mm. FILM ANCLE OF VIEW AND SIZE OF FIELD EMBRACED BY LENSES OF VARIOUS FOCAL LENGTHS. Distance in Feet to Subject ANCLE OF VIEW WHEN FOCUSED AT INFINITY 35 mm. Lens 40 mm. Lens 50 nm. Lens 75 mm. Lens Vert cal Ang c Horizontal Angle Vert cal Ang e Horizontal Angle Vert cal Ang c Horizontal Angle Vertical Angle Horizontal Angle 25.8 ° 35.0° 22.7 • 30.8° 18.3 ° 25.0° 12.2° 16.7° r eight and Width of Subject in Feet included in Picture 1 .41 by .56 .35 by .48 .2 'by .37 .16 by .22 2 .86 by 1.19 .75 by 1.04 .60 by .82 .38 by .52 3 1.34 by 1.84 1.16 by 1.60 .92 by 1.26 .59 by .81 4 1.80 by 2.48 1.55 by 2.14 1.23 by 1.70 .80 by 1.10 5 2.3 by 3.1 2.0 by 2.7 1.5 by 2.1 1.0 by 1.4 6 2.8 by 3.8 2.4 by 3.3 1.9 by 2.6 1.2 by 1.7 7 3.2 by 4.4 2.8 by 3.8 2.3 by 3.1 1.5 by 2.0 8 3.7 by 5.0 3.2 by 4.4 2.6 by 3.6 1.7 by 2.3 9 4.2 by 5.7 3.6 by 5.0 2.9 by 4.0 1.9 by 2.6 10 4.6 by 6.3 4.0 by 5.5 3.2 by 4.4 2.1 by 2.9 11 5.0 by ',.•> 4.4 by 6.1 3.5 by 4.8 2.3 by 3.2 12 5.5 by 7.6 4.8 by 6.6 3.8 by 5.3 2.5 by 3.5 13 6.0 by 8.2 5.2 by 7.1 4.2 by 5.7 2.8 by 3.8 14 6.4 by 8.8 5.6 by 7.7 4.5 by 6.2 3.0 by 4.1 15 6.9 by 9.5 6.0 by 8.2 4.8 by 6.6 3.2 by 4.3 16 7.3 by 10.0 6.4 by 8.8 5.2 by 7.1 3.4 by 4.6 17 7.8 by 10.7 6.8 by 9.4 5.5 by 7.5 3.6 by 4.9 18 8.2 by 11.4 7.2 by 10.0 5.8 by 8.0 3.8 by 5.2 19 8.7 by 12.0 7.6 by 10.5 6.1 by 8.4 4.0 by 5.5 20 9.2 by 12.6 8.0 by 11.0 6.4 by 8.8 4.2 by 5.8 25 11.4 by 15.8 10.0 by 13.7 8.0 by 11.0 5.3 by 7.3 30 13.7 by 19.0 12.0 by 16.5 9.6 by 13.2 6.3 by 8.7 35 16.0 by 22.0 14.0 by 19.2 11.2 by 15.4 7.2 by 10.0 40 18.4 by 25.2 16.0 by 22.0 12.8 by 17.7 8.4 by 11.6 45 20.7 by 28.5 18.0 by 24.7 14.6 by 20.0 9.4 by 13.0 50 23.0 by 31.5 20.0 by 27.4 16.0 by 22.0 10.6 by 14.5 60 27.5 by 38.0 24.0 by 33.0 19.0 by 26.0 12.6 by 17.4 70 32.0 by 44.0 28.0 by 38.0 22.5 by 31.0 5.0 by 20.5 80 37.0 by 50.5 32.0 by 44.0 25.5 by 35.0 '7.0 by 23.3 90 41.0 by 57.0 36.0 by 50.0 29.0 by 40.0 19.0 by 26.0 100 46.0 by 63.0 40.0 by 55.0 32.0 by 44.0 21.0 by 29.0 lens Based on standard sound film aperture .631 by .868 of an inch. 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