Photography came to occupy a central role in Surrealist activity. In the works of Man Ray and Maurice Tabard the use of such procedures as double exposure, combination printing, montage, and solarization dramatically evoked the union of dream and reality. Other photographers used techniques such as rotation or distortion to render their images uncanny. Hans Bellmer obsessively photographed the mechanical dolls he fabricated himself, creating strangely sexualized images, while the painter René Magritte used the camera to create photographic equivalents of his paintings. In her close-up photograph of a baby armadillo suspended in formaldehyde, Dora Maar performs a typical Surrealist inversion, making an ugly, or even repulsive subject compelling and bizarrely appealing.