APPENDIX A : FILM FORMULAS

Constantly Revised...

Film Amount:

    • Diameter of Spool/Reel of Film:

D = 2 * sqrt{ [C + F] / π }
D: Diameter of Spool + Core
F (Film Area) = Length of Film * Thickness of Film
C (Core or Barrel Area) = π * (Radius of Core)²
π = 3.14…
Notes: Basically you’re just adding the area of the film plus the area of the core and finding the diameter of the combined area. ( AREA OF A CIRCLE = πr² ) Motion Picture Acetate based film thickness is around .006″ (152.4 μm).

About agentjj20

Shua Jackson works as a VFX Supervisor out of the Upstate, SC. He also keeps busily involved in film directing and producing.

Posted on August 24, 2011, in Appendix. Bookmark the permalink. Leave a comment.

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