Make 12 luminous sun print postcards using a real analogue photographic process — no darkroom needed, just this kit and some sunbeams! Lumen printing is a camera-less photography technique that works with the sun. You'll do everything that's normally forbidden with light-sensitive darkroom paper — so it's fun, surprising, and a little mischievous. Arrange leaves, flowers or other objects on the treated paper, leave it in the sun for a while, and watch it change colour: where the light falls, the paper takes on pink/purple and beige/grey tints, while covered areas stay white — leaving you with beautiful, rosy-purple images that are truly luminous. You mix and apply the photographic materials yourself, with enough for all 12 postcards and a little extra to experiment on your own. If you enjoy cyanotype and sun printing, lumen printing is a lovely next technique to try — and the kit makes a great gift for photographers, printmakers and crafters. What's in the kit Step-by-step instructions and tips 12 light-sensitive papers, 10 × 15 cm 12 postcard backs, 10 × 15 cm Sachet of fixative to mix with water Label for your own mixed bottle of fixative Gloves 2 rinsing bowls Funnel