Re: Large Format Camera Shift

[P3D Oliver Dean <3d-image@xxxxxxxxxxxxxx>]

Larry Berlin wrote:

> >Date: Mon, 02 Jun 1997 
> >From: P3D Michael Nankin  writes:
> >.....How do you view two 8x10's? I don't know, I'm just thinking. ....
> 
> I have a couple of 9 in. x 13 in. print pairs that I cross-view easily. Or
> use the Freeviewer's assistant, discussed a while back, it would work nicely
> ....

Or you could print one of the views, say the right eye view, reversed as
a mirror image; then you can view using a single front surfaced mirror
placed at your nose perpendicular to the print surface, with the front
surface facing to the right, so that your left eye is looking directly
at the left print and your right eye is looking at the reflection of the
right print.  You have to adjust the angle of the mirror slightly until
the reflected image seen by the right eye appears to occupy the same
position in space as the left image seen directly by the left eye.

If you don't want to spend the money for a front surfaced mirror, you
can use a piece of polished black plastic tile (the kind that comes with
a removable adhesive paper protecting the polished surface) available
from many plastics suppliers.  Tim Cardinale clued me in on this several
years ago, and I was amazed at how well it works -- the angle of viewing
the reflection makes the reflection almost as bright as the reflection
from a front surfaced mirror, and the image is just about as sharp
(assuming the surface is properly smooth), with no doubling from a
back-surface reflection (the opaque, black coloring takes care of this).

Cordially,
-- 
Oliver Dean -- 3d-image@xxxxxxxxxxxxxx
Dominguez Hills (near Los Angeles), Calloushernia, USA


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