The photo blog

Tutorials, techniques and the history of pinhole photography and cyanotype

Rinsing a cyanotype under water as the Prussian blue fern print appears

How to rinse cyanotype prints properly

How to rinse a cyanotype after exposure, for how long, why the water turns yellow and why the blue darkens as it dries. The rinsing guide by Éric Marais.

How to rinse cyanotype prints properly

How to rinse a cyanotype after exposure, for how long, why the water turns yellow and why the blue darkens as it dries. The rinsing guide by Éric Marais.

Cyanotype whose blue intensifies on contact with hydrogen peroxide in a rinsing tray

Intensifying the blue of a cyanotype with hydrogen peroxide

How hydrogen peroxide intensifies the blue of a cyanotype at the rinsing stage, at what dilution and with what effect. The step-by-step method to reveal the blue without waiting for...

Intensifying the blue of a cyanotype with hydrogen peroxide

How hydrogen peroxide intensifies the blue of a cyanotype at the rinsing stage, at what dilution and with what effect. The step-by-step method to reveal the blue without waiting for...

Cyanotype that was too dark, lightened in a mild bicarbonate of soda bath that reveals the details

How to lighten a cyanotype that is too dark

Your cyanotype is too dark or blocked up in the shadows. How to lighten it in a mild bicarbonate of soda bath without erasing everything, by Éric Marais.

How to lighten a cyanotype that is too dark

Your cyanotype is too dark or blocked up in the shadows. How to lighten it in a mild bicarbonate of soda bath without erasing everything, by Éric Marais.

Pale and washed-out failed cyanotype prints lined up on a wooden worktop

Cyanotype troubleshooting: diagnosing a pale or washed-out print, symptom by symptom

Your cyanotype is too pale, fades away in the rinse or is covered in stains. A diagnosis by symptom, from cause to correction, by Éric Marais.

Cyanotype troubleshooting: diagnosing a pale or washed-out print, symptom by symptom

Your cyanotype is too pale, fades away in the rinse or is covered in stains. A diagnosis by symptom, from cause to correction, by Éric Marais.

Blue cyanotype print stored between sheets of tissue paper in an archival folder, to keep the cyanotype from fading

How to keep a cyanotype from fading over time

How to preserve a finished cyanotype over the long term, from thorough rinsing to drying, away from light and damp, while avoiding the alkaline materials that make the blue fade....

How to keep a cyanotype from fading over time

How to preserve a finished cyanotype over the long term, from thorough rinsing to drying, away from light and damp, while avoiding the alkaline materials that make the blue fade....