[photo-3d] Re:Kodaslide II (My use for stereo photography:)

["Chuck Holzner" <cfholzner@xxxxxxxx>]

--- In photo-3d@xxxxxxxxxxx, Peter Homer <P.J.Homer@xxxx> wrote:
> Chuck Holzner wrote
A stereo slide that could be viewed on site could
> >be compared to the site to give a "Then & Now" comparison.
> >It would work best if the view in the viewer appeared to be the 
same
> >size and depth as the view directly.  One could even use one eye in
> >the viewer and one directly to the tower to see minor differences
> >with some practice.


> 
> An idea of mine which I have not been able to put into practice yet 
but
> which might be usefull for this sort of thing is to have a combined 
stereo
> viewer/binocular. The eye pieces would be contained in a rectangular
> housing which could take a slide viewed by the eyepieces together 
with the
> images from the objectives to enable the views to be directly 
compared.
> P.J.Homer

We are working on the same idea, to compare a slide to the site where 
it was taken.
I had been looking for zoom viewfinders to use for one eye while 
looking at the slide with the other in the viewer. Binoculars make 
the image look larger but the slide viewers make them look smaller. 
You have to look at them both with the same magnification.  It was 
getting more complex (and expensive) then I wanted. Then I got the 
idea to do them both with a 1X magnification thus removing the need 
for the zoom viewfinder.  The 35 MM lens viewer should work with any 
slide taken with 35 MM lenses.

Another use would be to find the origonal site where some old stereo 
view was taken many years ago with some camera unknown to you.  You 
could convert the view to a realist slide before going there but 
would not know the effective focal length.  You would be back to 
needing some sort of zoom viewfinder.  I would still like to do that 
too.

There is another problem.  The light level from the viewer must be 
about the same as that from the view.

Chuck