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AMATEUR MOVIE MAKING 117
f 3.5 lens for making motion pictures at normal speed, with results which were satisfactory in every way. This is one of the first lamps to be developed which could be safely plugged into any house current yet which would in itself supply sufficient illumination for motion picture work. For this reason it is proving very popular.
This lamp has several unique features. The entire equipment, including extra carbons, cord, tripod adaptor and table stand all pack within the lamp itself so that no carrying case is needed. The lamp of itself is the case. This enables the photographer to carry his lamp into a house without giving the appearance that he is moving in for a month's visit.
The usual objections to the use of an arc by amateurs are that the lamp is likely to blow fuses or even endanger the wiring of an ordinary house current, it must be constantly adjusted or else the automatic feed kicks and splutters at just the wrong instant, the lamp spits and flickers, and when the carbons burn down, the lamp must be allowed to cool before renewing them. All of these objections have been overcome in the Cameralite. With its intense light it does not pull more than ten amperes, even when making the arc. It gives a pure, steady, flickerless light for four minutes without attention, and this time may be extended at any time by manual control at such time that the adjustment will not interfere with making the picture.
When the two doors are opened, the cord is seen in the case, this is lifted out. Then we find a supply of carbons, the table stand, the tripod adaptor and the carbon connector as well as the handle for manual support. This handle is screwed into the socket provided for it. The table stand is opened and locked in position with the thumb screw provided, and set up on the table. The lamp is now placed on this stand by inserting the stand rod in a hole bored in the handle. This supports the lamp firmly upon the table. Two short carbons are now inserted in the lower carbon sockets. Two long carbons are inserted in the holes in the top of the lamp. The fibre control handle which protrudes a short distance from the side of the lamp is depressed. This allows the upper carbons to fall into place, resting