We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
AMATEUR MOVIE MAKING 121
tially amateur cinematographic lamps. In actual practice they are very widely used by professional photographers as well as by industrial and commercial cinematographers, and they give full satisfaction in such work. They are amateur equipment in the sense that they are simply made, will serve a great variety of purposes, are compact, light in weight and comparatively inexpensive.
They are made to be used as either hand or stand lamps. Any of the three may be safely used in any ordinary home, and for short periods any number may be used provided the total consumption does not exceed twenty amperes.
They give an extraordinary photographic power in comparison with the current consumed. They are the safest of lights, in fact all that is required for extinguishing the arc is a sharply blown breath against the arc. The parallel arcs may be extinguished by swinging the lamp to one side with a quick motion. Yet, in spite of this, they will burn in any desired position, may be moved about to secure the best possible lighting effect and are thoroughly flexible.
(Courtesy Halldorson Co.) The Halldorson amateur cinema arc light partially folded.
Double Range Arcs. — The next class of lamp is the advanced amateur or semi-professional type which is a miniature reproduction of the twin-arcs used in the large studios. These lamps are made for stand support and are not designed for hand use. They are usually made in the double-range type. That means that by a special switch