Strictly speaking solarisation is reversal, or partial reversal, of the image due to gross overexposure. The effect discussed here, although described by photographers as solarisation, is the Sabattier* effect or ‘pseudo-solarisation’. Whatever the name, the effect is easily distinguished – the reversal of weakest densities, and the formation of a thin contour line around strong tone boundaries. It therefore contains some of the characteristics of the tone line effect, but is achieved quite differently. … PDF: Solarisation   Making a solarised print i)  Selecting an image – This should be a bold image with a strong pattern. The image could contain blocks of differing tone or strong graphic Read more