Cross Processing

Cross processing (sometimes abbreviated to Xpro) is the procedure of deliberately processing photographic film in a chemical solution intended for a different type of film. The effect was discovered independently by many different photographers often by mistake in the days of C-22 and E-4 . The process is seen most often in fashion advertising and band photography, and in more recent years has become more synonymous with the Lomography movement.

Cross processing usually involves one of the two following methods:

* Processing positive color reversal film in C-41 chemicals, resulting in a negative image on a colorless base
* Processing negative color print film in E-6 chemicals, resulting in a positive image but with the orange base of a normally processed color negative