[photo-3d] Re: Quiz#2 - its all in the film travel

[Bruce Springsteen <bsspringsteen@xxxxxxxxx>]

BP wrote
> Turning the camera upside-down changes the film travel direction from
L-R to 
> R-L. This is the difference.

Oh, no!  Now more people are being sucked into Cliff's Evil Looking-Glass
Vortex of Doom!  As his first witless victim, I feel responsible.

Look, everyone, the only film travel that matters is the trip it takes on
the boat.  If you had a perfectly symmetrical pinhole camera with a square
of film in it, shot, reloaded while the boat moved, and shot again, it
would not matter if you turned the camera rightside up, upside down or
sideways - you would have the same two image to work with at the end. 
Having it all in one camera that "changes" the film by itself has no
effect on that end situation.

Oh Mighty Chuck!  Save us miserable wretches who have fallen into darkness
and error!

,yltnatnepeR
neetsgnirpS ecurB   

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