Record Type: Film Output from Motion Picture Film Source

Expected Use: Reproduction Master

Product Name: DNS (Duplicate Negative, Silent)/DNC (Duplicate Negative, Composite) [MPA-R1]

Product Purpose: The goal of this product is to serve as a master for distribution copies to satisfy most customer requests as well as to protect preservation elements from loss, theft, and mishandling. This product is the next best physical condition copy to the preservation master; therefore this product may substitute for the original record if the original record is no longer viable.

Nature of Source Material: 35mm or 16mm B&W originating positive elements, including ORS (Original Reversal, Silent), FGMS (Fine Grain Master, Silent), FGMC (Fine Grain Master, Composite), MPPC (Master Projection Print, Composite), and MPPS (Master Projection Print, Silent), where there is a need to ensure that all significant visual and auditory information is carried forward.

Film Stock: Kodak 2234 (35mm)/Kodak 3234 (16mm)

Other Information: 

  • This product is a negative element made from positive source elements.
  • Separate sound track elements may be combined with visual elements to make a composite element.
  • This product is usually kept on site in a climate-controlled cold storage environment and retained to generate distribution copies.
  • This product is known internally as the “Intermediate copy” or “I copy” and usually has a yellow color swatch on the film can.

Quality Control


Control strips are created on a sensitometer for each new processing batch and evaluated on the densitometer. Adjustments are made to the processing chemicals as needed to achieve the desired neutral visual density reading of “1” on the control strip.

Methylene Blue Testing

ISO 18917: 1999 compliance: Methylene blue testing to measure residual thiosulfate and its decomposition products is of use in appraising the adequacy of washing and therefore the permanence of the silver image on photographic films, plates, and papers. Inadequate washing can cause a loss in image density and the formation of stain in low-density areas.


For the most part, film-based product specifications are dictated by the source material’s film element type. There is some flexibility however in regards to combining separate picture and soundtrack reels into a composite reel. Selected image adjustments such as color correction and density correction are routinely performed during the reformatting process.