| 摘要 |
A photographic image was produced by storing a geranium leaf in darkness and then projecting a light image on the leaf for a sufficient time to produce a suitable latent starch image, the leaf then being treated to extract the chlorophyll and then flooded with an iodine solution to stain the starch and develop the photographed image. Alternatively, instead of the leaf, a photographic medium may be employed including a film of a starch free, water, carbon dioxide and light permeable matrix, such as gelatin, having dispersed therein chloroplast containing algae or photosynthetic bacteria.
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