Sunday, March 30, 2008

ABRASION MARKS

Definition: marks on the emulsion surface of a film, caused by scratching. It can be due to traces of dirt trapped between layers of film as it is wound on the spool, or to grit on the pressure plate.

Definition: On the emulsion surface of the film are caused by scratching. It can be due to traces of dirt trapped between layers of film as it is wound on the spool, dirt in the film holder or grit on the pressure plate

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