This article is from the rec.arts.movies.tech FAQ, by Scott E. Norwood snorwood@nyx.nyx.net with numerous contributions by others.
`Green film' is simply a term used for film which is fresh from the
lab, and is still somewhat moist from the processing chemicals and
lubricants used at the lab. It requires slightly more attention upon
projection, as the moisture and lubrication can prevent this film from
running steadily through the projector. This is why some perfectly
good prints seem to have lousy registration when they have just been
returned from the lab.
 
Continue to: