I absolutely loved Egill Ibsen's Cyanotypes and acrylics because of his use of color to create a mood and sense of depth within his photographs.
The Cyanotype process is below: (from this link)
http://www.alternativephotography.com/wp/processes/cyanotype/cyanotype-classic-process
"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.
- Potassium ferricyanide and Ferric ammonium citrate (green) are mixed with water separately.
- The two solutions are then blended together in equal parts.
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."
Ibsen goes over his photographs with acrylic paint to add color.
I also loved Harry B Houchins' (University of Oregon's photographer, whoo!) and Crystal Edwards' Gum Bichromate photographs, which also had unique uses of color.
The Gum Bichromate process is below, from Peter J. Blackburn: (from this link)
http://www.alternativephotography.com/wp/processes/gum-bichromates/an-introduction-to-the-gum-bichromate-process
"1. Gum printing is a contact printing process. A good print begins with a good negative. You must have a negative produced in the actual size of the finished print. It can be as simple as taking a digital image and using photo manipulating software to invert (and flip) the shot to a negative making an inkjet print on paper or transparency film. You might also consider using an imagesetter to make quality negatives. Try to start with negatives that have good (not necessarily high) contrast and density.
For many years (and occasionally still) I made negatives using the analogue method of enlarging medium format transparencies onto orthochromatic film. I developed the film in dilute Dektol (1:20).
Much has been written about producing digital negatives and using software for alternative processes. Indeed, a properly made negative is one more key, among the many keys, to creating technically and esthetically pleasing prints. I would advise you to research, experiment, and practice!
2. With your negative ready and under subdued light or a safelight, combine one part gum arabic, one part dichromate, and a small length of watercolor from a tube. As an example for a typical 8 x 10 print, combine 3 eyedroppers full of gum with 3 eyedroppers full of dichromate. Then add about 2-3cm of watercolor from a tube. Mix thoroughly! With experience, you will discover that some mixtures require more pigment, others less depending upon, among other things, brand and color. Remember-mix thoroughly and occasionally stir as you use it!
3. After you have mixed thoroughly, brush the emulsion onto the paper over an area slightly larger than your negative. Brush as quickly and evenly as you can. You may need to switch to a dry brush to help smooth the emulsion. Try not to lay the emulsion on too thick or thin, with your primary aim keep it even. Here is where finesse plays an important part in the process.
4. Allow the emulsion to dry. A fan or a blow dryer set on the cool mode will help to speed the process along.
5.. Place your negative on top of the dry emulsion taking care that the "emulsion" side of your negative is in contact with the gum emulsion. Insert into your contact printer or sandwich with your plate glass...
6. Now expose your image to a UV source. A sunlight exposure may take from 1 to several minutes depending upon many factors such as pigment choice, gum/sensitizer ratio, time of day/season of year (if using the sun), and negative density. As an arbitrary starting time for your very first print, set the timer for three minutes and adjust your next prints accordingly.
7. When the timer goes off, remove your print from the contact printer or plate glass. Rinse the emulsion for a few seconds (5-10) under a very gentle stream of water to remove the least affected dichromate first. You will probably see some orange solution wash away almost immediately. Why let your paper soak unnecessarily in dichromate that otherwise can easily be removed by a brief initial rinse? After the rinse, place your paper face down in a tray of water for 5-15 minutes, then gently into another tray for an additional 5-15 minutes, then finally (if needed) into a third tray for the same amount of time. Your goal is to develop an acceptable print within 20 – 30 minutes. It is not unusual to use a small brush to help clear away small areas of unwanted pigment. However, if you find that the print is not clearing away in the allotted time or you need to scrub your emulsion to remove unwanted pigment, try exposing the next print for a shorter period of time. On the other hand, if the emulsion has swept off your paper or is flaking and fragmenting during the brief initial rinse time or in the first wash, try doubling or tripling your exposure time.
8. Now you may hang your print to dry or place face up on a drying screen. Afterward, it is usually recommended that another coat be applied of the same color or perhaps another color over top of the first layer to help improve the tonal range and density of the print. Simply repeat steps 2 through 8. After the last coating sequence, when your paper has dried, some printers suggest to remove any residual dichromate (indicated by an orange stain especially visible in the highlights) by briefly soaking the paper once more in a 5% (or less) solution of potassium metabisulphite."
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