Re: Lens Separation calculations

[P3D John Ohrt <johrt@xxxxxxxxxxxxxxx>]

P3D wrote:

>      An important part of John's question is the "nothing of significance in
> the forground or background" condition.
>      If I doubled the lens spacing to increase the depth in an object at ten
> feet and had an "insignificant" object in the frame at five feet as well as
> "insignificant" objects at infinity, the result would be an image with stereo
> deviation like an image with objects from two and a half feet to infinity. A
> difficult image to view for most. And you won't have much success telling
> people to ignore the foreground and background.
>      An important point for many scenics is that, except for elevated
> viewpoints, the ground(whatever the photographer stands on) is in the scene
> so hypers are difficult to do well.


First thanks for all the replies.  What I mean by "nothing of
significance" is that the presentation is staged as in the photography
of art or artifacts so that the subject is well lit, but the foreground
and background are draped to draw the eye specifically to the object.  I
know understand that the foreground and background give important visual
cues to put the stereo effect in the correct context ....sigh....

Well, if it was easy, it wouldn't be fun.

Regards,
John
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John Ohrt,  Regina, SK, Canada
johrt@xxxxxxxxxxxxxxx
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