Re: Lens Separation calculations

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Tue, 04 Feb 1997 20:39:53 -0500
>From: P3D John Ohrt writes:
>...................
>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.


One thing you might consider is compositing in the computer. You can shoot
the objects of interest using a uniform background which allows you to
easily separate the object from that background using chroma-key methods.
Then paste the stereo object by itself into a pair of images which provide
your desired surroundings or at least are neutral to the subject but which
provide the depth comparison to make it stand out.

It's somewhat easier to shoot your stereo images of draped backgrounds or
other complex backgrounds without messing with delicate art objects. Then
you have less to worry about while you shoot the art objects themselves.
Expect to practice a bit to get it right. If you need the film output, you
will have to do this with fairly large image files, but it would still be
worth it in some cases. Practice with smaller image files on the computer to
teach yourself the tricks of the process.

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


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