Production Error - DSR
"Dust, Scratches Residue" left in content that has been produced by the film capture and post-production process.
Scratches, dust and other film artifacts can impact the visual quality and technical soundness of a file. Sometimes these elements are introduced creatively, other times are remnants of image processing or correction.
Visible and distracting dirt and scratches are in the image.
How to Prevent:
Avoid handling of film.
Store in airtight container when possible.
VFX, Frame-by-Frame digital clean-up of DSR.
Have film scanned and repaired.