Chemigrams

In part 5 of our cyanotype series, Caroline Roberts takes the chemigraph process one step further by layering traditional contact prints over chemigraphs. Building on earlier experiments with chemical ratios, additives, and transparency exposures, she explores how combining two exposures on a single sheet can create complex, textured images. Roberts shares her detailed workflow – from soaking and coating to re-exposing and managing contrast – and discusses common pitfalls such … Read more

In part 4 of our cyanotype series, Caroline Roberts continues her exploration of chemigraphs – abstract cyanotypes created through chemical reactions – by combining them with transparencies. Building on her previous articles, she experiments with how different drying and exposure methods affect the final image. Roberts compares results from outdoor and UV-unit exposures, revealing surprising variations in tone, blending, and contrast. Through detailed testing, she discovers that dried chemigraphs paired … Read more

In the first two parts of this series, we explored how dilution, exposure time, and moisture can dramatically shift the tonal and colour range of cyanotypes. In this third instalment, Caroline Roberts pushes further by introducing everyday household chemicals into the mix – salt, alcohol, washing soda – each creating unpredictable, expressive effects. What began as an attempt to “address the blue” evolved into a new way of working, where … Read more