P3D Request for feedback on cha-cha's

[Michael Kersenbrock <michaelk@xxxxxxxxxxx>]

Greg Wageman wrote:
>
> >P.S. - My CSC Stereo photos (well, starting with the February ones)
> >       on www.photo-3d.com are hand held digital camera cha-cha's which
> >       I correct for rotation as part of my photoshop "mounting"
> process.
> 
> Since you mention it, I find them very difficult to fuse properly.  I'd
> be interested in hearing from other list members as to their experience.


Greg,
	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?
   b) with the cross-eyed view pair?

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

3) Can you detect rotation or keystoning problems?


Perhaps at some point I should make an on-line questionnaire
next to some images.

Within the image triplets, I think I've got each image about
210 pixels wide, but this can vary quite a bit in size
on various screens from a bit too small to quite a bit
too big -- while on the screen I'm using now it's a bit
too small.

Now note, guys (and gals), there are some cha-cha artifacts
with things moving.  The OMSI buildings in a distance image
has teeny-tiny people (in the image) moving between shots,
but that's only a small place in the image.  Likewise the
image of the electronic voting machines have things that
moved on the reflected surfaces due to people walking past me
(although I did some first-order manipulation of image to
substantially reduce the effect).

What I'm asking is feedback on the basic cha-cha and 
"mounting" when done in this size and freeviewed.  These
particular images are expressly done as snap-shot
recording of club activities for those who missed a 
meeting and/or others who might be interested -- so I'm
not looking so much for content issues (and those pages
so far have been hit quite a few times -- thanks!).

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.

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.  :-)

I've been thinking of using larger cross-viewed-only
to reduce retinal rivalry due to the low resolution and
heavily compressed jpeg stereo images used, but 
filesizes already are pretty big and I'm already
compressing the heck out of them with very high
compression levels (not to speak about my cheap 
camera's original jpeg compression).

All constructive hints will be appreciated (it's
done in Photoshop 5, so even specific things there
would be appreciated) as well as feedback on the
questions above.  I only want to to things better
(that hopefully are both cost-free and additional-time
free).

Thanks,

Mike K.


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