Unlike conventional photography Christopher’s Guests & Tetrarchs are formed using sunlight with a technique combining that of the camera obscura and pinhole photography. After drawing a life-size silhouette of the sitter’s shadow onto sheets of aluminium foil, Christopher then pricks thousands of tiny pinholes within the outline of the shape which serve as the camera’s lenses.
He then places the foil on top of a large home-made camera and loads colour photographic paper at the back. Sunlight then shines through, recording many images of the sun and sky simultaneously, thus forming the shape of the figure on the paper behind.