T3D Re: TECH-3D Camera focal lengths

[bercov@xxxxxxxxxxx (John Bercovitz)]

Henry writes:

> I used 70mm on Tokina zooms on RBT X2 camera.
> The distortion is not noticeable, ...

Next time you have that RBT out, how about putting
it on 70 mm and shooting a straight line so that 
it is parallel to and near the long edge of the film 
gate?  Like this:


   _______________________  <--- film gate
  |  ___________________  | <---- straight line
  |                       |
  |                       |
  |                       |
  |                       |
  |                       |
  |_______________________|

I'd be really interested to hear how much that line is
bowed.  If it is 30 mm long, is it bowed 1/2 mm, for 
instance?

Thanks,
John B


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