The photo blog

Tutorials, techniques and the history of pinhole photography and cyanotype

Home-made UV exposure unit with tubes for cyanotype, open on a workshop bench

Choosing or building a UV exposure box for cyanotype

Choosing or building a UV exposure unit for cyanotype. Box, UV tubes, power, wavelength and plans for a reliable, reproducible home-made build.

Choosing or building a UV exposure box for cyanotype

Choosing or building a UV exposure unit for cyanotype. Box, UV tubes, power, wavelength and plans for a reliable, reproducible home-made build.

Cyanotype being exposed in the sun, its surface turning bronze before the rinse reveals the Prussian blue

How long to expose a cyanotype in the sun: exposure time by season and sky

How long to expose a cyanotype depending on the season and the sky, and how to read the colour change on the surface rather than the clock. The guide to...

How long to expose a cyanotype in the sun: exposure time by season and sky

How long to expose a cyanotype depending on the season and the sky, and how to read the colour change on the surface rather than the clock. The guide to...

Exposing a cyanotype without sun under a UV lamp, indoors in the evening

How to make a cyanotype without sun, using a UV lamp

How to expose a cyanotype without sun: indoors, in winter or in the evening. The type of UV you need, and the distance and duration with a UV lamp, by...

How to make a cyanotype without sun, using a UV lamp

How to expose a cyanotype without sun: indoors, in winter or in the evening. The type of UV you need, and the distance and duration with a UV lamp, by...

Cyanotype printing frame exposed to the sun, to adjust the exposure time to the season

Cyanotype in winter: getting good prints from a low sun

How long to expose a cyanotype in the sun depending on the season, the time of day and the weather. Why summer and winter sun differ, and the colour change...

Cyanotype in winter: getting good prints from a low sun

How long to expose a cyanotype in the sun depending on the season, the time of day and the weather. Why summer and winter sun differ, and the colour change...