You could mimic the effect of an anamorphic lens by > by NOT placing the film in a flat plane. If the film is bent or distorted it > would result in a similarly distorted image.
An example: http://cjoint.com/?mkt7UnaXcI Made today for Xmas swap. The film, a Fiber paper 18x24, is bent as the pinhole is at the center of curvature. > JMB