Painting an Orchid with Light A darkened room, tripod, and small directional LED light are required for "light painting". Camera exposures of 20 seconds or more allow enough time to "brush" strokes of light in 3 dimensions, much as an artist paints a scene. Four or more separate photos are then layered and blended with Photoshop to create the final work of art! Longwood Gardens Kennett Square, PA