Salt printing is one of the earliest known processes of photography. It was invented by William Henry Fox Talbot. By combing salt water and Silver Nitrate he made photographic paper.
- A 35mm camera.
- All of the supplies to develop the film.
- A film scanner.
- Sheets of clear plastic.
- Distilled and tap water.
- Table salt.
- Acid free fine-art paper- that can be submerged for 30 minutes.
- Silver Nitrate.
- Citric Acid.
- Large Format Negative.
- A scale.
- Measuring cups.
- A shallow tray.
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Step 1: Make a Digital Negative
- Place film in film holder in the scanner.
- Choose professional mode.
- Choose film with film holder and then whatever kind of film you chose.
- For image type select 16 bit gray-scale 300 dpi.
- Choose your photos.
- Scan them.
- Save them to desktop.
- Name them and make them a JPEG.
- Choose what size you want them to be.
- Scan them again.
- Open them in Photoshop.
- Go to Image.
- Then go to Adjustments.
- Click on Invert.
Step 2: Making Your Paper
- Make a 2% salt solution- 20 grams of salt per liter of water.
- Put mixture in a shallow tray.
- Float paper on top of the water.
- When edges curl up slowly remove paper from the tray and let it dry.
- Make a solution of 10 grams of Silver Nitrate in 42 ml of distilled water.
- Make a solution of 5 grams of Citric Acid in 42 ml of distilled water.
- Combine the two solutions in a glass bottle.
- Must be stored in the dark.
- In dim light brush the solution onto the salted side of the paper.
- Let dry in a dark room.
Step 3: Creating Your Print
- Lay sensitized paper in a frame or put under a piece of glass in order to keep the negative from moving.
- Expose to sunlight until the clear parts are almost black.
- Bring into dimly lit room.
- Wash paper in cool water until runoff is clear.
- Fix in Sodium-Thiosulfate solution for 10 to 15 minutes- 50 grams per liter of water.
- Wash again and let it dry.
- You now have your finished project.
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