CHAPTER XI 

 MOVING PICTURES 



550. Apparatus and Material for Chapter XI : 



A competent operator ( S5oa); Moving picture head, or mech- 

 anism; Rheostat for direct current, or rheostat, inductor or 

 choke-coil, transformer, rectifier, motor-generator set for alter- 

 nating current ; Arc lamp and lamp-house ; Condenser, assortment 

 of different sized plano-convex lenses 14, 15, 16, 17, 19, 21, 23 cm. 

 focus ($yf, 6, 6^2, 7, 7>, 8, 9 in. focus); meniscus lens, 23 cm. 

 focus (9 in. focus); Projection objective, equivalent focus n to 

 15 cm. (4^2 to 6 in.), preferably of 6.3 cm. (2^2 in.) diameter, 

 although 4.5 cm. (i^ in.) will answer; Moving picture films ; 

 Tools, asbestos gloves, pliers, screw driver, copper wire, pins, 

 film cement; Supply of carbons. 



For continuous use a special operating room separated from 

 the auditorium by fireproof walls, all openings into the auditorium 

 to have automatic shutters closing in case of fire, the room to be 

 provided with a large flue connecting to the outside of the 

 building. 



SSOa. Competent operator. As no one can learn a difficult art from book 

 directions alone without spending an undue amount of time, we strongly advise 

 every one who wishes to be a moving picture operator or photographer to get 

 the help of an expert. Every university and technical school worthy of the 

 name now has laboratories in which the actual operations are learned by the 

 students in repeated efforts under the direction of expert teachers. Books are 

 helps, and often give an expert all that he needs to enable him to perform 

 successfully some difficult or unfamiliar operation. But the living teacher and 

 the actual experiment serve the beginner most effectively. 



We strongly recommend the operator to possess the best works on Moving 

 Pictures and projection in general, and to subscribe for one or more periodicals. 

 By studying these he can keep himself informed of all the advances in his pro- 

 fession. In the long run, the "man who knows" is appreciated. 



It was inevitable that with the exceedingly rapid development of the moving 

 picture business many difficult operations, and the special form of acting 

 requisite to the production and exhibition of a photo-play were undertaken by 

 persons without adequate training and experience. It seems to the authors 

 that it is highly creditable to human intelligence that the work has been so well 

 done and that the improvement has been so constant and rapid. It seems to 

 us, furthermore, that an important factor in the present creditable attainments 

 which have already been reached, has been due to the high standards advocated 

 by the Moving Picture World in all branches of the art. In particular the 

 authors wish to commend the work of Mr. F. H. Richardson in his Motion 

 Picture Handbook and in his weekly discussions and answers to questions in 

 the projection department of the Moving Picture World. 



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