Editing Negative pulldown (section)

=== Disadvantages of 3-perf and 2-perf ===
One disadvantage of 3-perf and 2-perf is found when projected theatrically, as it needs to be transferred back to a 4-perf system. This typically involves a [[film print]] with black cropping on the print itself in order to fit the image onto a 4-perf frame – encountering the same wastage problem as before.  Even so, the amount of film shot on a production is much greater than the length of the final film, so 3-perf or 2-perf are still viable cost-saving options for production.  Generally, 3-perf is most frequently used for [[widescreen]] television productions shot on film, as film is developed and then transferred to [[Videotape|video]], rendering projection incompatibilities irrelevant. Recently, this process has become popular with big-budget motion picture production, due to the advent of the [[digital intermediate]] process. The negative is scanned to high resolution (usually HD, 2K or 4K ([[digital cinema]])) digital files, colour graded, and ultimately printed back to standard 4-perf for projection. At some point in the future, the final 4-perf print will become unnecessary assuming the cinema distribution and projection chain become fully digital.

3-perf and 2-perf pose minor problems for visual effects work. The area of the film in 4-perf work that is not projected nonetheless contains picture information which is useful for such visual effects tasks as 2D and 3D tracking.{{Citation needed|date=October 2015}} This mildly complicates certain visual effects efforts for productions using 3-perf and 2-perf.

[[File:VistaVision_8_perf_35_mm_film.png|right|thumb|300px|A VistaVision 35&nbsp;mm frame, marked for a 1.85:1 crop]]