UTILIZING THE KODAK FOR ENLARGING.
Most of the present models of the Kodak can be utilized for enlarging, excepting only those models not permitting the removal of the back and the racking back and forth of the lens.
The use of Kodaks such as the No. 2 Flexo and No. 2 Bulls-Eve for enlarging is limited, as the distance between the focal plane and the lens is fixed and prevents the making of enlargements beyond a certain size. The Folding Pocket Kodaks (except the No. r and No. t-A), the 4-A, and the Cartridge Kodaks, including the Screen Focus Kodak, lend themselves particularly well to enlarging.
The method of utilizing these instruments is shown in the following : In enlarging by daylight with the Kodak all that is required is a room, with a north window preferred, through which the light can enter without obstruc tion from trees or near by buildings.
A room with one window is preferable as this of course lessens the difficulty in exclud ing the white light. It must be remember ed that although Bro mide paper is much less sensitive than a dry plate, an instant's exposure to white light will ruin it.
The window should be blocked up to exclude white light by means of a closely fitting wooden shutter, or any perfectly opaque substance such as 1 _ _ cam or press board fastened in place with small nails or Kodak push pins. An opening will of course have to be made in this shutter to receive the Kodak holding frame as will appear in the following diagrams : Figure t illustrates the frame for holding the Kodak when used as an enlarging camera. This frame is sim ply a shelf with a projedion to hold the Kodak and negative firmly in position, and can easily be construded with the simplest tools.
The shutter to exclude light from the window, and to which the holding frame is attached need be of wood only where the frame is attached, the re mainder of the window may be blocked 11.11 y V Cll. opaque cloth held in position with Kodak push pins. This will lessen the expense and also facilitate the putting in place and removal of the frame.
Figure 2 shows the Kodak and ing frame in profile and illustrates method of holding Kodak in sition with rubber bands. To place ative in position for enlarging, procure two pieces of plain glass, the same size as the negative, or that will fit opening A in the holding frame; see that the glasses are without flaws a n d perfeelly clean, place the tive to be enlarged from, between the glasses, binding ends of glasses with a small piece of adhesive binding paper to ensure the negative lying flat. Then insert glasses in groove A, with the negative upside down and with the dull side facing into the room.
Next remove the back from the Kodak (as it will not be used while enlarging), and place the Kodak in the holding frame as shown in Figure 3, securing the Kodak to the frame with heavy rubber bands as shown ; by using rubber bands the Kodak is held firmly in position and without dan ger of marring or scratching the leather covering.
When it is the intention to use one of the Folding Pocket Kodaks the holding frame should be construeled so as to allow a distance of three inches between negative and back of Kodak, as this will, with the Kodak Portrait attachment in place, increase the focal capacity of the Kodak sufficiently to permit the making of two time enlargements from the whole negative.
In many instances the a1lual piEture is contained in a comparatively small portion of the negative, and in such cases all unused portions of the negative may be covered with a mask of post office or black paper.
If any light enters from between the Kodak and the holding frame it may be excluded by throwing an opaque cloth over the frame.
The Cartridge Kodaks and the Screen Focus Kodak may be utilized in praalically the same manner as w. ill appear by referring to Figure 4. The Kodak is easily held firrnly in place by the use of Kodak Push Pins as shown in the diagram.