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950 HANDBOOK OF PROJECTION FOR
COMBINATION COLOR PROJECTION.—Since in this apparatus there are two separate light sources and two separate lens systems, two different colored beams may be projected, which may be of different cross section, or area. For example : The entire orchestra pit may be flooded with any desired color, while the orchestra leader may be spotted with white, or a different color, or the organ console may be flooded with one color, and the organist with white or another color spot. The same principle may, of course, be applied to the stage itself, the stage being flooded with one color, and one character, or group of characters spotted with white or a color. It is also possible to project a large star of any desired color, with a small, round spot of white or a different color in its center wherever it may be desired. The projectionist may follow an actor with spot just as readily as though he were handling an ordinary spot lamp.
DYNAMIC EFFECTS.— For projecting dynamic color effects a motor wheel driven by a spring is furnished with this projector, together with six glass design slides. These latter are placed in the slide carrier, and are focused upon the object to be illuminated. The color wheel is placed in front of the projection lens and rotated by its spring motor. The wheel has a large number of colors, which produce a dissolving effect from one to the other. The wheel may be set to rotate at different speeds.
Two color wheels are supplied with this projector, designed to be placed directly in front of the condensing lenses, the slide carrier and its holder being moved up out of the way. The color wheels are both hand operated. They are to facilitate the projection of combination colors.
It has been the experience of theatres which have used these projectors that the combination and dynamic colors create greater interest than single static colors as projeced by the ordinary spotlamp.
Scenic effects may be used on this projector. They may be either purchased outright or rented from the Brenkert Company. They are placed on the projector immediately in front of the framing shutters, the slide carriers being moved up out of the way, and are focused through the short focal length lenses used for flooding, as before described, on a drop covering the entire stage opening, or by means of the other, longer focal length lenses through which slides are projected, they may be focused on the motion picture screen. They may be projected singly through one lens system, or two may be