Classic Processes – Cyanotype


The Cyanotype process uses Iron compounds to set images as opposed to Silver Halides used in conventional film photography. The basic cyanotype recipe has not changed very much since Sir John Herschel introduced it in 1842. However, some advances have been made by Mike Ware in what is referred to as the New cyanotype process. Ware’s cyanotype formula has less bleed, shorter exposure times and a longer density range than Herschel’s, but it is also slightly more complicated to mix and uses more toxic chemicals.

Prints can be made either as photograms or using a negative the basic process is the same.

 

The cyanotype process is simple. It can be done easily in a few steps:

Mixing chemicals
The cyanotype is made up of two simple solutions.

Preparing the canvas

  • Paper, card, textiles or any other naturally absorbent material is coated with the solution and dried in the dark.

Printing the cyanotype

  • Objects or negatives are placed on the material to make a print. The cyanotype is printed using UV light, such as the sun, a light box or a UV lamp.

Processing and drying

  • After exposure the material is processed by simply rinsing it in water. A white print emerges on a blue background.
  • The final print is dried and admired.
One thing to remember: preparation is messy, the cyanotype solution will dye your hands and any other porous material it contacts, the best part is you won’t notice where it has contacted until a few hours later when it develops.
For the large scale prints above we copied a photo onto A3 acetate (or more accurately emailed images to a printing house and let them do the work), these were then laid over the treated fabric and under a sheet of glass to keep it all flat. Exposure time varies depending on the intensity of the sun so practice 1st with a few offcuts.

 

 

 

 

 

Advertisements

4 responses to “Classic Processes – Cyanotype

Please let me know your thoughts on the image above

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s