An author and a copyright holder
It is almost the case that the person for whom the author completed the
work fundamentally becomes an author, and has a right of copyright. However,
the author who made the work may not turn into a copyright holder. The
author of a movie is raised as the example. The author of a movie becomes
the motion picture producer and film director who completed the movie as
a whole. However, when having participated in these authors making a movie,
the person who completed the movie of the movie company will have a right
of copyright. Fundamentally, when an author begins to make a work, copyright
occurs. As long as there is no special thing, the author will have a right
of the work. Generally, copyright is enabled to give, and if an author
grants copyright, the given person will become a copyright holder. Moreover,
the author has to write the right about use of the right of an adaptation,
and a secondary work to a contract etc., when granting copyright. since
-- if all copyrights clarify Which portion is given?
since it can give or only a part can be given, they are convenient.