P3D Re: More 3D prints

[Paul Talbot <ptww@xxxxxxxxx>]

Gabriel Jacob surmises:

> most people
> in the APEC group would have the traditional type of viewer
> rather than View-Magics.

I don't know how many in APEC have View Magic, but Joel Alpers
regularly uses the View Magic over-under format for his submissions.
Hmmm.  Think he is trying to boost View Magic sales?  ;) ;) ;) ;)
If so, Joel is probably going to have some help from me for the
upcoming exchange.  I hadn't planned it that way.  But the reprints
I ordered from Grand Photo (first time I used them) came back 4"
square, a lot larger than I expected.  To mount them as standard
3-1/2"x7" views with "normal" infinity spacing and proper window
placement will be flat out impossible.  A group member used the
APEC comments page to make note of the excessive infinity point
separation of my first APEC submission, so I don't want to make
that mistake again.

The problem is, I haven't figured out what I need to do differently
to make "proper" stereoviews from my Realist format shots.  One
possibility that occurred to me is increasing the camera to subject
distance when shooting, but I don't think that will be sufficient to
solve the problem.  What about the print size?  Is it necessary to
significantly limit the degree of magnification?  I noticed that
Photo Works prints Realist format negatives at approximately 3-1/4"
square size instead of the 4" size of the prints Grand Photo made
for me.  My first APEC submission used prints made by a local lab
from a Realist format slide.  They were printed about 3-1/2" square,
not much more than the Photo Works size, but the infinity point
separation was apparently still more than desirable.  (I was told
it was OK for use in a viewer, but too much for freeviewing.)

> Another matter, which I haven't come across, and have always been
> puzzled with is in taking close-ups and having a scene with alot
> of depth. In SOME instances, I find cropping the image so that
> the stereo window edges are correct, I have to cut the width
> of one image larger than the other. This ends up with one image
> having a width of 3 inches and the other 1/4 inch less for example.

I think this is very much related to my question above.  I had noticed
that it would be possible to reduce infinity point separation while
keeping objects behind the window by trimming the two sides to different
sizes, but naturally didn't want to do it that way.

I hope some of the stereoview experts can help us both out, Gabriel!

Paul Talbot


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