Photomontage is the process and the result of making a composite photograph by cutting, gluing, rearranging and overlapping two or more photographs into a new image. Sometimes the resulting composite image is photographed so that the final image may appear as a seamless physical print. A similar method, although one that does not use film, is realized today through image-editing software. This latter technique is referred to by professionals as "compositing", and in casual usage is often called "photoshopping" (from the name of the popular software system). A composite of related photographs to extend a view of a single scene or subject would not be labeled as a montage, but instead a stitched image or a digital image mosaic. History Author Oliver Grau in his book, Virtual Art: From Illusion to Immersion, notes that the creation of an artificial immersive virtual reality, arising as a result of technical exploitation of new inventions, is a long-standing human practice throughout the ages. Such environments as dioramas were made of composited images. 19th century The first and most famous mid-Victorian photomontage (then called combination printing) was "The Two Ways of Life" (1857) by Oscar Rejlander, followed shortly thereafter by the images of photographer Henry Peach Robinson such as "Fading Away" (1858). These works actively set out to challenge the then-dominant painting and theatrical tableau vivants. In late Victorian North America, William Notman of Montreal used photomontage to commemorate large social events which could not otherwise be captured on film. Fantasy photomontage postcards were also popular in the late Victorian era and Edwardian era. One of the preeminent producers in this period was the Bamforth & Co Ltd, of Holmfirth, West Yorkshire, and New York. The high point of its popularity came, however, during World War I, when photographers in France, Great Britain, Germany, Austria, and Hungary produced a profusion of postcards showing soldiers on one plane and lovers, wives, children, families, or parents on another. Many of the early examples of fine-art photomontage consist of photographed elements superimposed on watercolours, a combination returned to by (e.g.) George Grosz in about 1915. 20th century Heartfield, Grosz, and Dada In 1916, John Heartfield and George Grosz experimented with pasting pictures together, a form of art later named "Photomontage.” George Grosz wrote, “When John Heartfield and I invented photomontage in my South End studio at five o’clock on a May morning in 1916, neither of us