SL3D some more

[P3D <PK6811S@xxxxxxxxxxxxxx>]

Allan Woods:

>Again, I am NOT saying stereo pairs are bad - just that they
>are not "what we see with our eyes;" they are not "TRUE stereo;"
>they are not the inspired word of our creator.  They are
>just one of several ways to create an imperfect illusion.

No problem with this.  Whether it is a one/two/multiple lens camera,
the goal is to create a useful/pleasing imitation of reality.

As to how SL3D works?  "It's been said many times, many ways..." :-)

It is a black box that records two images on one film.  The 
depth-of-field in each image, and the on-film displacement between
them are fully controllable through an aperture mask.

I'm presently working on several problems in my lenses.  The overall
color in the pics are a little off - pinkish usually.  Off-axis apertures
cause excessive coloring at the sides of the pics.  And the camera meter 
(Honeywell Spotmatic) is thrown off a stop or two by the
filters - pics are frequently underexposed, or the red side is over-
exposed.

BTW, using the "RRRRCBBBB" aperture was a failure.  Stereo depth was
barely detectable and the overall slit shape of the aperture made
the pictures look streaky, as if something had been smeared across them.
Edge-to-edge nice color though :-)

Do most people understand that a 'circle of confusion' is the
projection of a circular stop?  That a square stop creates
a 'square of confusion' and a star-shaped one a 'star of confusion'?
And that splitting the aperture into two separate stops creates
two separate, smaller 'areas of confusion', which overlay only for
points 'in-focus'?

Paul Kline
pk6811s@xxxxxxxxxxxxxx

- Every "Statement of Purpose" should include the sentence:
-   "And have fun and get along together while doing all this!"


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