Re: [photo-3d] more: Digital Video 3D

["John A. Rupkalvis" <stereoscope@xxxxxxxxxxxxx>]

----- Original Message -----
From: "Raleigh Souther" <raleigh@xxxxxxxxxxxxxxxxx>
To: <photo-3d@xxxxxxxxxxxxxxx>
Sent: Tuesday, March 13, 2001 7:56 AM
Subject: [photo-3d] more: Digital Video 3D


>
> ----------
> From: rick corrales <ddarick@xxxxxxxxx>
>
>
> The way most people shoot 3d video, and a way that is
> the most practical , is to use a product called a
> nu-view.

The key word above is "practical".  For most people starting in 3-D video,
as well as anyone who has one camcorder, this is no doubt the best route.
It is sort of analogous to the Nimslo for still photography, in that it is
very simple to operate, and does not require any special technical
knowledge.  Other than setting convergence, it is essentially
"point-and-shoot".  For people just starting in stereoscopic photography, I
usually recommend that they begin with a Nimslo (or a Teco-Nimslo) for
stills, and a Nu-View for videos.

> ...it did seem to vignette at
> the wider angle lens setting.

This is true.  Nothing is perfect.  This is one of the reasons I have not
gotten one yet (although I may, if I get some spare cash.  I just don't want
to cut into my saving up for an RBT).  Wide angle capability is important to
me because of the type of usage I anticipate for my stereoscopic video work.
Also, wide angle views often enhance the apparent depth range, as does
properly executed closeup imaging.  the Nu-View is not capable of true
closeups at this point.  The light paths are different, the path through the
beamsplitter being shorter than the path reflected off of it.  Thus there is
a very slight discrepancy in image size (and focus).  For most practical
purposes, this difference is not noticeable, except on closeups.  The other
consideration, is that the Nu-View can only be used for alternate field
imaging (shutter glasses or Z-screens for display).

These few negatives aside, the Nu-View is an excellent choice for most
casual videographers, especially beginners.  It gets you started in
stereoscopic video "right out of the box", and has many applications for
professionals as well, especially in the area of documentation.  The realism
of 3-D images can enhance the understanding of such things as machinery in
operation, work flow studies, instructional videos, etc.
I wonder if it might have some real viable applications in security.  The
position and relative distances of different people during a break in or
robbery might be useful to police investigators and in court trials.

One other note.  There are also a couple of clones of the Nu-View on the
market.  If you are offered one of these, be sure to get references from
people that have used them.  From what I have heard, they are problematic
and do not have the light flare shield that the Nu-View does (even the
Nu-View can give you a problem if you let front or side light bounce off the
beamsplitter).  But then, you should observe the viewfinder or viewscreen
image while you are shooting, shouldn't you?

If anyone in the P3D group has any further info on the Nu-View or any of the
clones, I would be interested.

JR


 

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