A feature film is lucidly a full-length film, the type of film that you would traditionally buy a ticket for at your local theatre. The term is also used to differentiate between films that are initially shown theatrically as opposed to those made purely for television.
A modern feature is quintessentially between 80 and 180 minutes long, but divergent groups have different minimum lengths to be considered a feature.
‘The Story of the Kelly Gang‘ was the first feature film based on length, and was released in Australia in 1906. The feature traces the life of the legendary infamous outlaw and bushranger Ned Kelly (1855 – 1880). The film lasted for more than an hour, and at that time was the longest narrative film yet seen in the world. Its approximate reel length was 4,000 feet (1,200 m). It was first publicised at the Athenaeum Hall in Collins Street, Melbourne, Australia on 26 December 1906 and in the UK in January 1908.