. The American annual of photography. s kept the same size,but this is not correct, as light is lost by diffusion, and byobstruction where smoking is allowed. It is impossible togive an exact rule dealing with this point, but it will not befar wrong, for distances exceeding fifteen ft. and for picturesup to twelve ft. diameter, to allow 100 extra for each yardof increased distance. Flicker is a defect of projected motion pictures which isstill too frequent, even in theatres of some pretensions. It isa common mistake to confuse flicker with unsteadiness orjerkiness, an entirely different t
. The American annual of photography. s kept the same size,but this is not correct, as light is lost by diffusion, and byobstruction where smoking is allowed. It is impossible togive an exact rule dealing with this point, but it will not befar wrong, for distances exceeding fifteen ft. and for picturesup to twelve ft. diameter, to allow 100 extra for each yardof increased distance. Flicker is a defect of projected motion pictures which isstill too frequent, even in theatres of some pretensions. It isa common mistake to confuse flicker with unsteadiness orjerkiness, an entirely different thing. Thus, the writer recol-lects an operator remarking, Yes, this is a very tolerablemachine, but it has too much flicker about it; when, in fact,the projector was practically free from flicker and sufferedsolely from jerkiness of the intermittent mechanism. Curiously enough, some of the very cheapest toy cine-matographs show an entire absence of flicker; while some ex-pensive theatre projectors exhibit the fault conspicuously. The.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorktennantandw
