Large-format films, commonly labelled as 'IMAX Films', are specially produced on cameras using a large film size. Large format films characteristically are around 40 mins long and use an educational documentary style to look at a specific animal, place or sport. Other genres, such as drama or animated fantasy do exist.
This category should only be used for sites that deal with specific large format films. Sub-sections of bigger sites (e.g IMAX.com) are perfectly valid.