"Reshoots" has become word that fills every movie fan with fear and dread.
In truth, it's far from a new thing. In fact, additional filming that takes place after production has wrapped has been commonplace in the film industry for a long time.
More recently however, reshoots have taken on a whole new meaning. Because plenty of big budget productions undergo extensive reshoots because of studio interference and/or negative responses from test audiences, it's assumed that ALL reshoots are bad. And it doesn't help that some of the more notoriously reshot films ever released haven't exactly turned out very well.
Science-fiction films are no exception to the trend, largely because their complex scripts and expensive special effects often mean studios don't want to risk a critical and commercial failure.
Now it should be said that there are a number of cases where reshoots greatly improved the quality of a movie. For instance, much of Back To The Future had to be reshot after lead actor Eric Stoltz was replaced by Michael J. Fox, a decision that helped make the film one of the all-time sci-fi greats.
But more often than not, reshoots can have devastating effects on a film upon its release...