From Sprocket School
- 70mm mag prints
- 35mm mag prints
- 16 mag prints
- mag tracks and vinegar syndrome, storage practices
70mm Mag Sound Formats
- why we do it, how we do it
- Acetate prints with magnetic soundtracks are especially prone to vinegar syndrome. Signs of decay might be flaking mag track, stickiness, vinegar smell, warping.
- Magnetic oxide is applied to the film base. For long term storage prints should be emulsion in (so the magnetic oxide will be facing out). Storing prints the wrong oxide in risks "print-through" where-in the track signal is partially imprinted onto the layer next to it. This orientation may not be correct for projection so make sure to always check the orientation during your inspection of the print.