T14. Anthotypes with Dietlinde DuPlessis

In this workshop, participants will explore the anthotype process as a plant based and eco conscious photographic practice, combining historical context, scientific foundations, and hands on experimentation. The session revisits early photographic research through figures such as Herschel, Talbot, and Somerville, while also connecting these origins to contemporary artists working with botanical and environmentally sensitive methods.The workshop examines photosensitive natural pigments, the fading process, and the way pigment selection shapes both visual and conceptual results. Special attention is given to how variables such as heat, pH value, and the use of negatives or positives influence image formation. Participants will experiment with plants and vegetables such as beetroot, spinach, turmeric, and flower petals to observe their different tonal qualities.The practical component centers on sourcing and preparing materials, extracting pigments through blending and filtering, and testing color intensity before coating paper with plant based emulsions. The process continues with drying, preparing positives, and setting up exposures, encouraging a process oriented approach that values testing, comparison, and collective reflection.

Outline

1. Introduction and objectives, theory and historical context of anthotypes
2. Science and aesthetics of plant based pigments and key process variables
3. Collection of plants and preparation of materials
4. Pigment extraction, testing, and evaluation of color intensity
5. Paper coating and drying
6. Creation of positives and exposure setup
7. Review of exposures and group discussion