British Kinematography (1950)

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Jan., 1950. hardy : agricultural engineering 11 to it seriously and the lesson was taken very much to heart. In order to counteract the outbursts of mirth a small trailer was made to introduce the main film and thus prepare the audience for the race track performance. Some difficulty was experienced in finding a site for photographing this film, with a view-point high enough to command a bird's-eye view of the entire field which was to be used for the demonstration. Shooting continuously over a period of many hours, which were spread over a number of days in November, caused many headaches in changing light. One very distracting feature was the cloud shadows which also moved across the field at 16 times their normal speed. However, a reasonable result was obtained, and this unusual method of demonstrating a slow operation proved very successful and popular. The binder knotter is a small and ingenious piece of mechanism which is not only a very common source of trouble to the farmer, but it also presents a problem to the instructor. This is partly because it is only a matter of inches Fig. I. Tractor rearing on a gradient. in size and is therefore a difficult subject to demonstrate to a crowd of farmers. The chief snag, however, is the fact that, although troubles occur all too frequently in the field, it is usually very difficult in a demonstration to make the machine do the wrong thing at the right time. Much care and patience was required before all the faults and remedies had been successfully filmed. This film has now made it possible to project the 3-inch knotter on to a screen to be demonstrated with ease — and certainty — to a large audience. The instructional film has not been limited to the use of County machinery advisors. Other instructional films were made with a broader application, being more of a documentary nature and designed to be shown to a much wider audience. Some of the more general of these found their way on to the theatre screen, while the more technical ones were used extensively by the C.O.I, mobile kinemas during the war. They were sound films and consequently produced on a grander scale at a higher cost. Some of the larger manufacturing concerns are making use of films in their advisory services. The Shell — B.P. organisation for instance, now has its