Apple Cinema Tools 3 - Manual (Page 202)

202 Appendix A Background Basics
Due to its lower costs, 16mm film is typically used for productions with smaller
budgets. If you intend to shoot 16mm but release your project as 4-perf 35mm, then
you should use Super 16mm film. It has perforations along only one edge and a larger
frame that more closely matches the 4-perf 35mm aspect ratio.
35mm film is most commonly used for theatrical releases, with 4 perforations per frame
(4-perf ) the most prevalent version. There are other versions of 35mm, such as 3-perf
and 8-perf, but they are not currently supported by Cinema Tools.
Perforations
Camera and projection equipment use the perforations, also known as sprocket holes,
along one or both edges of film to pull it past the shutter.
16mm film is available as single perforated (perforations along one edge only, allowing
space for an optical track, or in the case of Super 16mm film, for a larger frame) and
double perforated (perforations along both edges).
Cinema Tools supports the 20-perf 16mm format. It supports this format for film and
change lists based on key numbers. It does not support it for film and change lists
based on ink numbers. (See the next section for information about key numbers and
ink numbers.)
Cinema Tools supports the 4-perf 35mm format for all types of film lists and change
lists. It is by far the most common 35mm format. There are 16 frames per foot.
16mm format Super 16mm
35mm format
4-perf
UP01101.Book Page 202 Thursday, March 10, 2005 3:16 PM