OTHER ILLUSTRATIONS OF DUPLEX PHOTOGRAPHY.
PHOTOGRAPHING A HUMAN HEAD UPON A TABLE.
The picture is made in the following way: A [table] is provided with a top having a portion of it movable at B. The person whose head is to be photographed sits in a chair underneath the table. The board is removed to allow the person’s head to pass above the table. The board is again placed in position on the table, and the closer the person’s neck fits the hole in the table the better. The camera is arranged with a box, as in the illusion we have just described; but in this case the camera is turned so that the two doors, C and D, open up and down instead of sideways. The camera is raised or lowered until the crack between the two doors of the box is on a level with the edge of the table. The upper door, C, in the box is opened wide, so as to expose to the sensitized plate, when the shutter is worked, the head above the table, and all of the objects within the range of the lens above the edge of the table.
