Heather Ackroyd and Dan Harvey are both guest faculty at the Banff Centre for Arts and Creativity where they’re currently experimenting with a unique photographic process: growing your own.

The pair grow grass vertically in a darkened room while projecting a negative image onto it. The seed is exposed to various degrees of light so that seeds that receive the most light grow faster than those in the shaded areas. Areas with no light, yellow out. Over time, the length and color disparity results in a visual image or what Harvey dubs a “biochemical photograph.”

Ackroyd and Harvey had been using analog technology to project and grow their images, but with analog tech increasingly harder to come by, the team is experimenting with laser projectors as well. What they’ve found so far is that digital technology is unable to replicate the detail and level of precision that the duo needs for their grass-grown photos. Score another one for analog.

The video below details the team’s work.

Via: Reddit