* Lumen prints on vintage silver-bromide paper: 'Dandelion' (left) and 'Malva' (right). Lumen prints are similar to photograms. The difference is that the contact frame is left out in the sun for several hours to create a printing-out reaction in the emulsion. The paper is then placed directly in the fixer. No developer is used in the lumen process. Size 8" x 10" each.