[MF3D.FORUM:561] Re: Solution

["Bill Glickman" <bglick@xxxxxxxx>]

Paul

> >
> > 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.

Don't even think about it!!  Quality free advise... KEEP IT COMING... it has
all been very educaitonal and not the least bit overwheming... some of these
things we just would not think of ourselves in such a short period of
time... I thank you all...


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.

        Yes, I thought of these on my test shots, very good suggestions to
assist in the situaltion...


> Bill, are you shooting your 6x7 in landscape or portrait
> format?  Do you have the rotating back feature?

I was shooting landscape...no rotating back, must mount the camera vertical,
very cumbersome... but possible, not much difference in lens seperation
though.


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.

      Now that is a great idea, sort of like a shift lens without converging
verticals.... but wouldn't this severly limit my ability to shift the chips
left and right in the window?  For some reason that seems risky to losse
that feature?

Paul, your on fire with knowledge tonight, keep it coming!!!

Bill G