Film screening is such a crucial step because when you are so close to your film, it's impossible to see it with fresh eyes. This tool allows for real emotional responses to be evaluated and then incorporated back into the film.
On a much smaller scale, an audience's understanding of a movie trailer can also be critical. With focus group screening, you get feedback on immediate interest and engagement in your movie. Test your movie trailer with different background music, lighting, speed and narrating voices and get an understanding of audience preferences. Movie trailers are what drive people to the theater, so it can be just as important to get these right as it is the whole movie.