Fade definition

Moving from a shot into blackness; the image of the film gradually fades into darkness is called a fade out.  A fade in is the term for when the darkness becomes brighter and brighter and the image comes into view.  They are created in a lab during the printing phase.  However, negative cutters prepar them beforehand by cutting an overlap of black into the A&B rolls.  Fades made in the labs only come in set amounts, such as 48 frames.