Enlarging With The Autoprint

You can -

1. ;Use it as an Enlarger and make pictures of quality.

2. ;Copy old photographs, maps, plans, drawings, etc.

3. ;Photograph pages from books and illustrations.

4. ;Photograph articles such as watches, medals, small machine parts, and any object which comes within the limits of the baseboard.

The working of the Autoprint Enlarger is so simple that once it has been fitted up, the manipulation is straight-forward. A few preliminary hints will however be helpful.

Filling Up

The Enlarger is packed in its box, dismantled. Assembling should be carried out in accordance with Fig. 153. All parts should be carefully put together and all screws securely tightened.

Illumination

The illuminant consists of a 100-watt Fullolite Lamp (pipless), connection being made to the ordinary house supply by the extension and plug provided.

Inserting The Negative

Films or Plates should be inserted the film side down, that is to say, with the film side towards the base-board when the negative carrier is placed in the enlarger. The negative with its mask should be laid between the two cover glasses and secured by the springs fitted to the holder. It will be found that the negative holder can be moved sideways or backwards and forwards, for centring purposes.

Focussing

(See Scale of Enlargements.) Slide the Enlarger up the main arm to the number required and adjust the lens by the screw knob until it registers the same number.

Intermediate sizes of enlargement between the standard can be obtained by sliding the enlarger up until the approximate size is obtained, and then finally focussing by the small screw. The enlarger is scaled for all the standard sizes.

Diffusion is possible by screwing the lens focussing knob 2 or 3 turns as required.

No. 1. 31/2 X 21/2. All sizes up to 15 x 12 inches, and smaller sizes in proportion. Takes also a large portion of a 1/4-plate.

No. 2. 1/4-plate. All sizes up to 20 x 16 inches, and smaller sizes in proportion. Covers 9 x 12 cm. plate entirely, also large portion of 5x4 and Post-card.

Placing The Paper In Position

The enlarger having been focussed, press the switch, whereupon the light of the enlarger will be extinguished and the red lamp switched on. If a portion only of the picture is required, use the orange cap without switching off. This gives illumination for the placing of the paper, which should be fastened to the baseboard by means of the spring arms. The small clamps at the ends fit into a groove on the side of the baseboard and thus hold the spring arm down securely on the paper.

Exposure

The paper being in position, exposure is made by again pressing the switch, which extinguishes the red lamp and switches on the enlarger lamp. A table of exposures for a normal unstained negative will be found on the baseboard of the enlarger. It must be borne in mind that this is only a guide and that exposure will vary according to the density of the negative and the size of the enlargement. The exposure having been made, switch off the enlarger lamp, switch on the red light and proceed with developing.