The decalcomania process allows Jahan to stage his photocollages, or to create strange plastic backgrounds for her monotype photomontages. This makes the "action" of his photocollages take place in an abstract, uncertain space. His photocollages are similar to Max Ernst's collages for Une Semaine de bonté (1934), a true collage-novel. Like Max Ernst, the technique allows Jahan to give sight to apparitions, or unexpected analogies. But he excludes the mystical occultism of Max Ernst in favour of humour, or small political or cultural vignettes. As such, Corrida gived a humurous image of a torero fighting a herd of pigs.