P3D Re: Request for feedback on cha-cha's

["Greg Wageman" <gjw@xxxxxxxxxx>]

From: Michael Kersenbrock <michaelk@xxxxxxxxxxx>


> I'm curious too!  I'd appreciate feedback from folk
>        looking at:
>
>     http://www.photo-3d.com/Csc/cscfeb99.html
>
>There are several cha-cha shots there.  Questions I have are:
>
>1) Do you have significant problems fusing them?
>   a) with the parallel view pair?

The cake has vertical alignment problems.  The Voting boxes have an
exposure difference, which produces retinal rivalry for me.  The OMSI
sign is fine.  The picture taken through the "O" of the sign has
motion-induced retinal rivalry, but is otherwise fine.

>   b) with the cross-eyed view pair?


I don't like to cross-view, and in any event it makes the images appear
much too small.

>2) On your video screen, how wide is
>   a single image -- actually measured ?


The OMSI sign leftmost image is pretty close to 2" wide.  (1 15/16ths to
be precise.)

>3) Can you detect rotation or keystoning problems?


Vertical offset seems to be the biggest problem.  It's present in the
"California in Depth" image, and the others I mentioned above.  I don't
detect any keystoning or rotation.  As Larry mentioned, it may be an
image size difference which is producing misalignment.


>In terms of the previous thread, are these good enough
>(cha-cha's) for somebody to start with?  Not talking
>about stereoscopic perfection, but more along the lines
>of whether one can snap easy-ones and enjoy the results.


I think if these were the first stereos someone ever shot, they would be
elated by the results.

>Personally, I have no trouble fusing any of these, they
>view extremely easily -- but my eyes generally can
>fuse "anything" and the spacing matches my home screen
>rather well so my own "testing" may not be a typical
>sample.  :-)


My eyes have been getting more picky as I get older.  Actually I think
this is a good thing because it allows me to more easily detect problems
in my own images.

     -Greg W. (gjw@xxxxxxxxxx)



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