ABSTRACT
This chapter deals with depth-of-field blur, which stems from the focal point of the camera. An element that is blurred for this reason will keep the same, even amount of blur as long as the camera keeps that particular focal length. This means that a shape created to isolate a focus object that has a depth-of-field blur should carry the same amount of blur for the whole shape edge. The spline has been placed on the extreme edge of the blurred focus object. From a strictly spline-based perspective, it wasn’t accurate, but with the click of a button, these splines can be made to accurately isolate the focus object. The reason for this misappropriation of shapes was motion blur. Motion blur is a bit different. Motion blur occurs when a focus object moves a great distance over a short number of frames. The image blurs because the camera’s shutter doesn’t open and close fast enough to visually capture the moment.
