Society of Motion Picture Engineers : incorporation and by-laws (1924)

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^r=i V ■' if===ani=:^=if=ii=^=if=np TRANSACTIONS OF THE SOCIETY OF MOTION PICTURE ENGINEERS CONTENTS Page Officers, Committees, Membership, Constitution and By-Laws 4-14 Presidential Address 15 The Progress of Arc Projection Efficiency. By P. R. Bassett 24 Colored Glasses for Stage Iliumination. By H. P. Gage 37 Stereoscopy and its Possibilities in Projection. By Hermann Kellner . . 54 Effect of Humidity upon Photographic Speed. By F. F. Ren^^dck 69 The Straight Line Developing Machine. By R. C. Hubbard 73 Difficulties Encountered in the Attempt to Standardize Theater Screen Illumination. By R. H. Richardson 93 The Effect of Scratches on the Strength of Motion Picture Film Support. By S. E. Sheppard and S. S. Sweet 102 Requirements of the Educational and Non-Theatrical Entertainment Field. By W. W. Kincaid Ill Theory of Mechanical Miniatures in Cinematography. By J. A. Ball. 119 The Filmo Automatic Cine-Camera and Cine-Projector. By J. H. McNabb 127 A Method of Comparing the Definition of Projection Lenses. By S. C. Rogers and L. Olsen 136 Results Obtained ^dth the Relay Condensing System. By Hermann Kellner 143 "Is the Continuous Projector Commercially Practical?" By Lester Bowen and Herbert Griffin 147 The Standardization of Film, Camera and Projector Dimensions. By W. C. Vinten 153 Improvements in Motion Picture Laboratory Apparatus. By J. I. Crabtree and C. E. Ives 161 Physical Properties of ^Motion Picture Film. By M. Briefer 177 Panoramic Motion Pictures. By Giovanni C. Ziliotto 206 "Constant Current and Constant Potential Generators for Motion Picture Projection." By A. M. Candy 215 The Making of Motion Picture Titles. By J. I. Crabtree 223 Report of Standards and Nomenclature Committee, May, 1924 236 Report of Publications Committee 267 Report of Progress Committee 270 Index — By Author I Index— By Subject VIII Number Eighteen ! MEETING OF MAY 19, 20, 21, 22, 1924 | ROSCOE, N. Y. I I I