Advantages of Using Prime Lenses Over Zoom Lenses - Associated Content from Yahoo! - associatedcontent.com

http://www.associatedcontent.com/article/7769286/advantages_of_using_prime_lenses_over.html?cat=40
Most professional movie cameras, as well as some high-end consumer cameras, use detachable lenses similar to those used by SLR still cameras. This allows you to use many types of lenses, depending on the kind of shots intended. All of these lenses fall into two categories: prime and zoom.