Chemigrams and Caffenol

Experimenting with home made developers

In the final month of our Alternative Photography Summer School we invite you to mix your own developers made from ingredients including coffee, plant based materials, vitamin C, and soda crystals. Coffee based developers are also known as Caffenol - these developers can be used for developing both prints and film, although we are concentrating on making prints on paper and film as we don't assume everyone has access to developing tanks. Do have a try and share your results with us via email or social media!

We still have packs of free materials available - please email us if you'd like us to send you one!

Chemigrams

Experimental techniques for making prints on photographic paper using coffee / plant based developer recipes.

Download or view full instructions in the guide below

chemigram jpg.png

Video on making prints on photographic paper using coffee / plant based developers

Phytograms

Experimental techniques for creating images on photographic film using developer made from vitamin C and soda crystals in water.

Download or view full details in the guide below

phytogram jpg.png

Video on making prints on photographic film using vitamin C and soda crystal developer

Chemigram, Caffenol and Phytogram presentation by Sophie Sherwood

Chemigram, Caffenol and Phytogram FAQs

 

What is used as developer for chemigrams? Is it the saline solution?

No - the caffenol (coffee based) or plant based material in soda crystals and vitamin C is used as developer. Saline solution can be used as a fix, but it takes longer than darkroom fix. Urine has also been used as a fix, but we’re not demonstrating that!

 

Is caffenol used as a developer? 

Yes - it is made using coffee - see our resources for the recipe, and it will be a dark brown solution. You can use it to develop paper or film.

Would you take the print through several runs of developer and fix to make the process more interesting?

Yes you can experiment with layering the different processes, and using resist materials such as vaseline, masking tape or sellotape to prevent different areas of the print from being developed or fixed.

How do you fix an image using the saline solution?

You make up a concentrated solution by dissolving as much salt as you can in warm water by stirring it in slowly until no more will dissolve. Table salt is fine but sea salt will do the same thing. Then place your print into the solution and agitate - the print may need to soak in the solution for a day or two to make sure it is no longer sensitive to light. You can't really over fix the image but do wash it afterwards. The saline solution can't re reused, it's best to make up fresh each time.

Can you re-use the fixer?

The saline solution as detailed above can't re reused, it's best to make up fresh each time. However if you are using darkroom fixer, dilute according to manufacturer's instructions and store in an airtight bottle. This can be re-used several times.

Can you use petals as well as leaves to make chemigram developer?

We only used leaves, but it would be interesting to try petals from different flowers. Have a go and find out!

Do you have to lay the materials on the darkroom paper in a darkroom?

No, all the processes we have described can be done in light. 

Can you combine the cyanotype and phytogram process?

Yes, we think Dan Hererra has done this and maybe some of the other artists we have mentioned. You could try coating photographic paper with a cyanotype mixture, drying it then exposing and using further developers. Or you could try coating photographic paper with cyanotype solution and exposing it while wet - or painting the cyanotype solution on afterwards. If you have any of the cyanotype paper from our materials packs, try that with caffenol, chemigram or phytogram developer. To make your own cyanotype paper you will need ammonium ferric citrate and potassium ferricyanide, you can buy these chemicals online as powders and make up into solution to mix together and coat your paper. 

Useful Links

Real Photography Instagram: https://www.instagram.com/realphotographycompany/

Sophie Sherwood: http://www.sophiesherwood.co.uk/

Dora Maar: https://www.tate.org.uk/whats-on/tate-modern/exhibition/dora-maar

Pierre Cordier: http://www.pierrecordier.com/

Elizabeth Woodger: https://elizabethwoodger.com/

Janelle Young: https://www.janelleyoung.com/capturing-the-infinity-of-the-sea

Hannah Fletcher: https://www.hannahfletcher.com/

Pete Webb: https://www.instagram.com/photopete11/

Nettie Edwards:https://lumilyon.wordpress.com/

Karel Doing: https://kareldoing.net/

Dan Herrera: https://www.instagram.com/danherrerastudio/?hl=en

Caffenol recipe: https://www.caffenol.org/2010/03/12/the-delta-recipe/

Phytogram recipe: https://phytogram.blog/recipe/

Good luck!

 

Chemigram Gallery

lumen 2 al

lumen 3 al

nettle 2al

pik 1

chemigram 5

chemigram 3

chemigram 4

chemigram

Phytogram 3

Phytogram (2)

Phytogram

chemigram 2

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stpaulsdarkrooms@gmail.com

 

St Pauls Learning Centre, 94 Grosvenor Rd, Bristol, BS2 8XJ, United Kingdom (see on map) Tel. 0117 914 5470

 

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