Jump to content


Photo

Sound stripe thickness-effective FFD with cupped stock


  • Please log in to reply
No replies to this topic

#1 Gregg MacPherson

Gregg MacPherson
  • Basic Members
  • PipPipPipPip
  • 1966 posts
  • Other
  • New Zealand

Posted 30 July 2013 - 07:44 PM

More thoughts ensuing regatding the old PlusX,  TriX I just got.   The stock is old and slightly cupped,  the emusion side having shrunk a little.  Given the sound stripe on either edge there is potential for the film in the gate to be cupped and the effective flange focal depth (FFD) in centre frame to be off by the stripe thickness.  So I roughly measured the stripe thickness,  based on a stack of eight layers,  as a about 0.025mm/layer.  I think this would be a significant number to a tech checking a FFD.

 

Any thoughts?

 

 

 

Cheers,

Gregg


Edited by Gregg MacPherson, 30 July 2013 - 07:46 PM.

  • 0


Aerial Filmworks

Wooden Camera

Broadcast Solutions Inc

Glidecam

Visual Products

CineLab

New Pro Video - New and Used Equipment

FJS International, LLC

Technodolly

Tai Audio

The Slider

CineTape

Media Blackout - Custom Cables and AKS

Abel Cine

Willys Widgets

Metropolis Post

Paralinx LLC

Gamma Ray Digital Inc

rebotnix Technologies

Ritter Battery

Rig Wheels Passport

Paralinx LLC

Technodolly

Media Blackout - Custom Cables and AKS

The Slider

Willys Widgets

New Pro Video - New and Used Equipment

CineLab

Visual Products

CineTape

Broadcast Solutions Inc

Rig Wheels Passport

Glidecam

Metropolis Post

Abel Cine

Gamma Ray Digital Inc

Ritter Battery

FJS International, LLC

Aerial Filmworks

rebotnix Technologies

Wooden Camera

Tai Audio