Ben Croll James Cameron delivered a masterclass in Paris on Thursday night following a sold-out screening of his 1984 breakout “The Terminator.” With the title so fresh in his mind, the filmmaker spent much of the session sharing stories from the project’s improbable making of. For one thing, what the production lacked in financial resources it made up for in pre-production time — eight months, to be exact, as the team waited for Arnold Schwarzenegger’s schedule to clear.