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Cyanotype High School Lesson

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by

Melanie Rapp

on 21 August 2018

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Transcript of Cyanotype High School Lesson

For advanced students, you can prepare many different surfaces.
Paper, card, textiles or any other naturally absorbent material is coated with the solution and dried in the dark.
You can choose whether you want a straight edge or feathered edge.
Printing
Objects or negatives are placed on the material to make a print.

The cyanotype is printed using the sun.

Exposure time approximately 10 minutes.
Place objects on top of material, place plexiglass on top of both, clamp/tape.
Cyanotypes must be overexposed to create the best image.
When placing out in the sunlight, your blue, uncovered surfaces will eventually turn to a silvery-green/blue when it is properly exposed.

What do you need to do?
Choose one of your photos from the and make a digital negative of it.

- OR -

2)Gather materials to do a photogram.
Processing and drying
After exposure the material is processed by simply rinsing it in water.

• You'll want to rinse the cyanotype in cool water for 12-15 minutes, until the water is no longer yellow, but running clear.
A white print emerges on a blue background.
An additional rinse with hydrogen peroxide makes the blues stronger.
The final print is dried and admired.
Make sure you keep the paper in darkness before and after exposure!
Our Paper

The cyanotype is made up of two simple solutions: potassium ferricyanide and ferric ammonium citrate. However, since we don't have a lot of room in our darkroom, we have made it easy for you.YOU will get to use ready-to-go cyanotype paper. It is light-sensitive,so we keep it in the light-proof black bag until we are ready to use it.



TO MAKE A NEGATIVE OF A DIGITAL IMAGE IN PHOTOSHOP
IMAGE > ADJUSTMENTS > INVERT

Your negative should have strong contrast.

PRINTED ON TRANSPARENCY PAPER
CYANOTYPE
PREPARING FOR YOUR CYANOTYPE:
A BRIEF HISTORY
* Discovered by Sir John Herschel in 1842.

* Anna Atkins used the cyanotype to help her botanist father record specimens.
Alessandra Hull

For "Ray-o-graphs"/Photograms:
Find your objects or cut paper that you would like to put on the paper. Whatever blocks out the light, will leave a white shape, and the outside of it will turn blue as it exposes.



For photo prints:
Pick a photograph. Invert in Photoshop and turn to black and white. Increase contrast. Print on transparent vellum.
Ask Ms. Rapp for help with printing.



TIPS:
* Use the "Rule of Thirds" and Elements/Principles of Art.

* Think about your composition BEFORE exposing!
* Balance * Texture * Value
* Repetition * Shape * Line
Student Examples
Full transcript