Remove the negative carrier J, Fig. 155. This is adapted for use with negatives G x 4 in. or smaller. When negatives smaller than 6 x 4 in. are being used, it will be necessary to use an opaque mask to cut out all light other than that which passes directly through the image or picture area of the negative. Unless the mask is used the Bromide paper will be spoiled. In an envelope will be found a set of six flexible metal opaque masks, including all of the most popular sizes, from 21/2 x15/8 in. (Vest Pocket) to the 51/2 x 31/4 in. (Postcard) size.

Clean the two sheets of plain glass and place one in the negative carrier.

A. ;Put the Film from which you wish to make the enlargement on the glass, face or dull side down. Now place the metal mask of the correct size over the negative, bevelled edges uppermost, and adjust the negative to the correct position by moving it to the right, left, up or down, so that the transparent margin of the negative will not appear in the opening of the mask ; then put the other sheet of glass on top, fastening it in place by means of the spring lingers at each side of the carrier, and replace the carrier in the frame, O, Fig. 156.

B. ;An enlargement can be made with this Enlarger from a negative that is still in the strip, that is, before the different negatives in the strip have been cut apart. The carrier has a slot at each end through which the strip of film can be threaded.

Be sure that the glasses, the mask and the strip of film are all perfectly free from dust. Thread the strip of film through the slots in the carrier, with the face or dull side of the negative down, until the end of the film projects about an inch from the slot in the further end. Place the metal mask of the correct size on top, making sure that the mask is placed in position with the bevelled ends up. This permits the easy adjusting of the strip of film later. Now put the other sheet of glass on top but do not secure it with the spring fingers. Replace the negative carrier in the frame, O, and draw the strip of film through the negative carrier until the negative desired is in position.

Fig. 156.

C. With glass negatives smaller than 6x4 in. it is necessary to use only the lower sheet of glass in the carrier. Place the metal mask of the proper size on the lower glass ; put the glass negative, face or dull side down, over the opening in the mask, and secure it with the spring fingers on the sides of the carrier ; then replace the carrier in the frame O, with the face or dull side of the negative down, that is towards the lens, L, Fig. 155.

The " Kodak " Auto-Focus Enlarger is always in focus. The automatic focussing device, C, Figs. 155 and 156, slides on a vertical cam, which constantly changes the focus, with the result that the image is always perfectly sharp, regardless of its size.

The Size Of The Enlargement

The Enlarger will make prints from 11/2 to 31/2 times the linear dimensions of the negative used, or of any portion of it, that is from 21/4 to 121/4 times its area. The largest print that can be made with the Enlarger is 21 x 14 in. from a 6 x 4 in. negative ; and the largest print that can be made from a Vest Pocket " Kodak " negative (21/2 x 15/8 in.) is approximated 81/4 X 51/4 in.

When the Enlarger is being adjusted to obtain the desired size of the print, the light should be turned on. This is done by pushing over the switch.

Turn down the exposure lever M, Fig. 155, which removes the orange-coloured cap, inside the bellows, from above the lens ; now the image will be clearly visible on the top of the table or shelf. To make the image more distinct place a piece of plain white paper about 14 x 11 in. in position under the lens of the Enlarger, but make sure that the paper is removed before placing the sensitive Bromide paper in position.

To adjust the Enlarger for different sizes first grasp the frame O, Fig.' 156, which contains negative carrier, then loosen the wing nut B, Figs. 155 and 156, and move the frame up or down on the standard A. When the image as projected on the table is of the desired size, tighten the wing nut B.

Caution

Do not attempt to adjust the Enlarger by grasping the board that holds the lens L, Fig. 155.

By using the scale on the standard, as shown in Fig. 156, enlargements from 11/2 to 31/2 times the exact linear dimensions of the negative can be made. Slide the frame O up or down, until the indicator line N, Fig. 156, is in a position that exactly coincides with the line underneath the figure desired, giving the number of times of enlargement.

The Enlarger as illustrated in Fig. 156 is adjusted to make an enlargement l| times the linear dimensions of any negative used. Enlargements can of course be made with the indicator line N in a position between the lines on the scale. When the scale is used, the image will be the exact number of times enlarged, as given by the figures on the scale.

The Bromide Paper

After the desired size of enlargement has been obtained, and the wing nut B securely fastened, turn the exposure lever M till it is nearly horizontal, as shown in Fig. 155. This brings the orange coloured cap into position above the lens, giving an orange light by which you can see clearly to put the Bromide paper in place ; this orange light is safe and will not fog the sensitive paper.

Now take the steel bars. They are covered on the bottom with felt, so that they will not scratch the table. It will be noted that on one side of one of the bars the felt does not extend to the edge. Place that steel bar on the table near the standard of the Enlarger and along one side of the image, so that the edge not covered with felt comes next to the paper.

Remove the plain paper. The coated or emulsion side of the Bromide paper is slightly concave. Slide the edge of the Bromide paper (coated or emulsion side up) underneath the edge of the bar (that part not covered with felt) and place the other bar (which is covered to both edges with felt) on the opposite edge of the Bromide paper.

To make the exposure, make sure that the light has been switched on and then turn down the exposure lever M, Fig. 155, for the length of time necessary. By turning the lever the orange coloured lens cap is removed from above the lens.

Important

After making each exposure, turn off the light by pushing over the switch. If it is not turned off the heat from the lamp might ruin the negative. Use the light only for determining the correct size of the enlargement and for making the exposure.