Copyright automatically exists for any original work you create, such as a photograph, film, short story, etc.
Registering your copyright gives added protection to your ownership of the item's intellectual property and can be used as helpful evidence in a court of law.
Visit the Canadian Intellectual Propery Office website for more information.
If you would like to register a copyright, follow the instructions found here:
Application for Registration of a Copyright in a Work (Canadian Intellectual Property Office)