The units are made in various types depending on the usage: Single-8, Super 8 film, 16mm, 9,5 mm, 35mm and 70mm.
The photographic emulsion is removed from the area to be joined and the base of the other end is brought into contact with it.
[3][4] Film editors use a version with a very small overlaps at the top and bottom of the picture frame to edit film negatives, although units with a longer overlap are preferred for projection release prints.
The tabs are often printed with a number or bar code to identify the film after processing.
Splicing is sometimes used to describe the technique of compositing used in digital film-making which is used to combine visual elements such as actors onto a virtual background.