[MF3D.FORUM:560] Re: Solution

[Paul Talbot <ptww@xxxxxxxxx>]

Bill Glickman wrote:
> 
> Unless I do what Paul suggested, crop away the sides and make a smaller
> image to view, then it would work fine, but it would also turn MF stereo
> into 35mm stereo... and that is not my goal.  Your comments please...

As David Lee mentioned, we're really overloading Bill with
tips and suggestions now.  But here's an important one I
left out before:  The ground is almost always a concern when
doing hyperstereo from ground level.  If your tripod is just
a few feet off the ground and the cameras are aimed level,
the ground is very likely to be the nearest object in the
scene.  John B. or one of the other math whizzes could probably
tell us how to convert the height of a normal lens into the
corresponding distance to the nearest point on the ground
that the lens sees.

You have a couple options to deal with the ground problem:
  a) crop out some ground when mounting;
  b) raise the camera higher.  This may require shooting
     from a platform, or shooting from a lookout point
     (e.g., a bridge or cliff);
  c) point the cameras up some.  You may end up with excess
     sky in many cases.

Bill, are you shooting your 6x7 in landscape or portrait
format?  Do you have the rotating back feature?  With the
image area of the RMM mounts limited to 50x50, you may want
to work with the film in the vertical orientation so that
you can crop plenty of ground and sky to help with keeping
the near points on the ground out of the viewable image area.

Paul Talbot