Page "Surrealist techniques" Paragraph 39

Triptography is an automatic photographic technique whereby a roll of film is used three times ( either by the same photographer or, in the spirit of Exquisite Corpse, three different photographers ), causing it to be triple-exposed in such a way that the chances of any single photograph having a clear and definite subject is nearly impossible.

Indeed, finding any edges on the negative itself during the developing process is a nearly impossible task.

Typically the developing of such a roll of film is an exercise in automatic technique in and of itself, cutting the film by counting sprocket holes alone, with no regard for the images present on the negative.

The results have a quality reminiscent of the transitory period in sleep when one dream suddenly becomes another.