09/27/2011 08:44 EDT | Updated 11/27/2011 05:12 EST

Sony to stop paying theatres for disposable 3-D glasses starting in May 2012

LOS ANGELES, Calif. - Sony Corp.'s movie studio has put theatre owners on notice that it will stop paying millions of dollars per film for disposable 3-D glasses starting next May.

That's just before it is to release a couple summer blockbusters — "The Amazing Spider-Man," and "Men in Black III" — in 3-D.

A person with the studio said the move was announced in a recent letter sent to theatre owners.

The person was not authorized to speak publicly and requested anonymity.

The abrupt policy change comes amid falling revenues from DVD sales. It was first reported by The Hollywood Reporter earlier Tuesday.

Sony's worldwide president of distribution, Rory Bruer, told the magazine that the issue needed to be resolved and it was trying to give theatre owners a long lead time.