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Instant Photo Machines.. Selection and Use of Materials.. Book of Photography

Selection and Use of Materials
Instant Photo Machines

The instant photo has eliminated the waiting period between taking a picture and getting it on paper. If the picture is not good, it is enough to take another picture directly. Except in one case, these machines give only one picture without getting the negative, but the picture can of course be reproduced again. These machines tend to be large and bulky, but it must be considered that they contain a laboratory inside. In most models, exposure control is automatic, the lens is simple in formula, and the machine is very easy to use. In low light, they use different types of burning flashes. As for cold weather, there are problems of processing that can be overcome by keeping the film during development in a metal sheath placed in the pocket of the garment, which is sufficient to maintain a constant temperature.

- Photographic cameras, for instant photography and their accessories.
Long-form machine
Foldable reflex machine
Simple color film machine
Simple black and white film machine
Manual exposure control machine

- Instant film back:
For using instant film in large and medium-format machines there are special backs that take the place of a film chassis or storage. This allows for a controlled instant photograph to be taken before the final cliché is made in the normal way. It also accommodates instant black and white film on which the negative can be restored. A back can be fitted to most machines that have interchangeable backs.

- Instant film sizes:
The square image size is approximately 83 x 86 mm and is used for 8-shot films. It is the most economical size used especially in cheap machines, the cheapest of which only use black and white film. Other machines are suitable only for color film, while there are improved models that use both black and white and color film. In all these models, exposure is automatic and a flash cube is used.

Most instant photo models produce rectangular images measuring 83 x 107 mm, while the films intended for them have a speed of 75 ASA for color and 300 ASA for black and white. Outside of this automation, there is manual exposure calibration and they are equipped with a complex lens and also equipped with machines that are made with many additional parts.

The smallest size is the square size of 80 x 80 mm and is only given with the folding reflex machine or its derivatives. The film package contains 10 pictures and a battery (as for the rest of the machines, the batteries are contained in the box). An electric motor immediately throws the captured image and the image appears gradually over a few minutes. With this type of color film, the image does not leave any waste and is protected from dirt and pollution.

In 1976, a new name appeared in the world of instant photography for machines that produce pictures measuring 6.7 x 9 cm.