A photo finish is a term used to describe a situation in which two or more competitors finish a race so close together that a photograph must be used to determine the winner. The term can also refer to the technique of using a camera to capture the moment when a race is won. Sepias, mattes, ops, and synthesisgraphs are all techniques used in photography to create a photo finish. Sepias are a type of monochrome print that uses a reddish-brown pigment to give the image an aged look. Mattes are a type of photographic print that has a matte finish, which gives the image a softer look. Ops are a type of photographic print that uses a combination of colors to create a unique effect. Synthesisgraphs are a type of photographic print that combines multiple images into one. All of these techniques can be used to create a photo finish.