Scratch marks or cue points in raw film stock that indicate transition points — guides for precise dissolves and fades. Obsolet in digitalem Workflow, aber klassisches Konzept.
In the negative material, you'll find small, precisely placed scratches or ink marks—these are your slate marks. The editing assistant places these marks during editing planning to show the editor exactly where a dissolve needs to begin or end. Without these markings, the rough cut becomes chaotic: you're juggling frames that look visually identical but have no chronological connection.
The practice works like this: you mark the beginning of the dissolve on A-roll and the end on B-roll—both marks must be visible and immovable. In digital workflows, digital equivalents (timecode markers, edit marks in the NLE) are used today, but the classic method with scratches on the original remains standard in some post-productions, especially when working with film original. The psychological advantage: you immediately see if the dissolve is temporally correct—not just in the final rendering.
Common sources of error: Markings that are too close together (easily confused), or scratches that are damaged during transport. A good slate mark should be at least 2-3 frames away from the cut so that the cutting machine doesn't accidentally rush over the mark. Some editors use colored inks instead of scratches—this is less invasive but less reliable with fast cuts.
In the context of negative processing and assembly, slate marks are essential for communication between the editing department and lab technicians. They reduce misunderstandings and prevent transitions from being unintentionally shifted or forgotten—a detail that is crucial during the mastering process.