| The pictures were taken with a so-called infrared false-color film.
Films used: all infrared pictures on the page Experiments as well as on the other photo gallery sections Islands und Infrared Dreamfields were taken on Kodak Ektachrome Professional Infrared (EIR), and developed with the process E-6 (yields faster film speed and more saturated colors than with the development process AR-56).
Principle of operation: the films show short-wavelength infrared radiation (around 900 nm) as red color. Because living plants contain chlorophyll that emits this infrared radiation more intensified, plant parts with chlorophyll appear bright read. Red light is rendered as green, and green light as blue color.
Additionally, I used an orange filter that holds back blue light. It makes the rendered colors more intensive because all film layers are also sensitive to blue light that would therefore be rendered as white color and would impair the color saturation.
Living plants that emit mainly infrared and green light, will be reproduced by the film as mixture of red and blue, and therefore appear purple to pink.
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