Since the late 1960s, visual artists have used slide shows in museums and galleries as a device, either for presenting specific information about an action or research or as a phenomenological form in itself. According to the introduction of Slide Show, an exhibition organized at the Baltimore Museum of Art: “Through the simple technology of the slide projector and 35 mm color transparency, artists discovered a tool that enabled the transformation of space through the magnification of projected pictures, texts, and images.” Although some artists have not necessarily used 35 mm or color slides, and some, such as Robert Barry, have even abandoned images for texts, 35 mm color film slides are most commonly used.