Application of provisions to joint works

(1) The right conferred by section 15 of this Act is, in the case of a work of joint authorship, a right of each joint author to be identified as a joint author. (2) The right conferred by section 16 of this Act, is, in the case of a work of joint authorship, a right of each joint author and his right is satisfied if he consents to the treatment in question. (3) A waiver of rights under section 20 of this Act, by one joint author does not affect the rights of the other joint authors. (4) Subsections (1), (2) and (3) of this section also apply, with such modifications as are necessary, in relation to a film which was, or is alleged to have been, jointly directed as they apply to a work which is, or alleged to be, a work of joint authorship; and for the purpose of this subsection, a film is “jointly directed” if it is made by the collaboration of two or 42 more directors and the contribution of each director is not distinct from that of the other director or directors. (5) The right conferred by section 18 of this Act is, in the case of a work made in pursuance of a joint commission, a right of each person who commissioned the making of the work, so that, (a) the right of each is satisfied if he consents to the act in question; and (b) a waiver under section 20 of this Act by one of them does not affect the rights of the