Animators can also use computer software to create films and models, which is generally faster than the traditional method. The characters and objects they make can be either two-dimensional or three-dimensional, but the process for creating each type is a little different. For 2D computer generated animation, the animator creates a series of images with each one very slightly different from the last, very similarly to the traditional method. To create 3D images, he or she has to make a model of the character or object. This can be done by creating animation variables, which are points on a computer model that can be moved to create a different posture or look, or by using motion capture, in which a live actor acts the part of the character and his or her motions are recorded and applied to the computer-created model.