Chris Bucklow

here is how he does it:

"Unlike conventional photography, each image is unique and unrepeatable. The process Bucklow uses creates an unusually intense quality of light and the images are formed using sunlight with a technique similar to the pinhole photography developed in the late nineteenth century. He begins by making life-size silhouette drawings direct from the sitter's shadow on to sheets of aluminium foil, which is then painstakingly penetrated with thousands of pinholes within the outline of the shape. These pinholes will act as the camera's lenses. Using a large home-made camera, he then places the foil on top and loads colour photographic paper at the back. Sunlight is then allowed to shine through, recording many images of the sun and sky simultaneously, thus forming the shape of the figure on the paper behind. Bucklow achieves a variation in the different works depending on the intensity of the sunlight, the time of day and the speed at which the pinholes are exposed to the light..."

more info here: Chris Bucklow