When I was younger, every bus or railway station, airport, Woolworths, Boots, shopping centers and department stores all had a Photo booth. These booths allowed the sitter to have 4 pictures taken, in return for a suitable deposit of coins, followed by the actual silver gelatin black and white photographs in a strip about 1.5 inches wide and 5 inches long. The pictures were accepted by the passport office and were of great quality.
I used these machines to have my photo taken and the little strips of photos were prized treasures.
How did the booth work though? Well they used photographic paper and reversal processed it to produce the positive image. This process lends itself to automation and is consistent in finished photographs,
- Expose photographic paper in camera,
- Develop paper as a normal negative in B&W chems
- Rinse paper
- Bleach paper to remove negative
- Rinse paper
- Fog paper with light
- Develop paper in B&W chems
- Rinse paper
- Fix paper
- Final Rinse
Stuff you need
- Black and White Photo Paper (Ilford Multigrade Resin Coated)
- Black and white paper developer (Ilford PQ Universal)
- Potassium Permanganate
- Sodium Bisulphate
- Sodium Metabisulphite
- Rapid Fixer
Bleach
- 4g of Potassium Permanganate in 1 liter of water (part A), bottle for use
- 34.5g of Sodium Bisulphate in 1 liter of water (Part B), bottle for use
Clearing Solution
- 30g of sodium Metabisulphite in 1 liter of water, bottle for use.
Method
- Expose photographic paper in camera, using ISO 1 as a base line for exposure
- Develop paper as a normal negative in B&W chems. 2 minutes in Ilford PQ Universal 1+9
- Rinse paper, 2 Minutes
- Bleach paper to remove negative, 1 minute always use fresh bleach never reuse.
- Rinse paper, 2 Minutes
- Immerse paper into clearing solution, 30 seconds.
- Fog paper with light, 1 minute
- Develop paper in B&W chems, 2 minutes
- Rinse paper, 2 Minutes
- Fix paper, 2 Minutes
- Final Rinse






