Re: Two Camera Stereo

[P3D Phil Spooner <phils@xxxxxxxxxxxxxxxxxxx>]

In-Reply-To: <199606260204.VAA06811@xxxxxxxxxxxxxxxxxxx>

Bob Shotsberger wrote :

>This is my "low-tech" way to make 3-D views.
>
>I've been using two Minolta SLR cameras and two projectors for over five or
>six years now and find it quite satisfactory.
>
> ... ...

Thanks for the interesting information. I have just started trying two 
camera stereo after an initial period of experimentation with a beam 
splitter and also the left-foot right-foot technique. I'm doing prints for 
the Viewmagic system at the moment, but I plan to try slides shortly (for 
hand held viewing as I've only got one projector). I thought, maybe 
incorrectly, that the Viewmagic system might be a little less tolerant of 
mounting errors. It's certainly easier for a novice to line up 6x4 prints, 
anyway.

I have two 20 year old Olympus 35RC compacts which I've mounted on a wooden 
bar. Initially I tried two separate cable releases held in one hand - and 
got very bad sync of course. Then I tried a bar across the top, raising and 
lowering the pivot point to adjust sync. This worked well, but I found that 
the sync needed slight readjustment sfter the assembly had been partially 
dismantled to load the film. Now I have two longer cable releases with a 
simple wooden jig/grip which looks promising, although I'm not expecting to 
freeze fast action with this method.

As I understand it, the lens 120mm separation in my setup will give problems 
with close subjects. I'm trying to compensate slightly for this by shifting 
the prints laterally during mounting. It's difficult for me to judge how 
successful this is as my enthusiasm makes me tolerant of errors. Does any 
body know how far I can get away with this? Am I correct in thinking that 
mounting errors are more noticeable with projected slides than with 
prints/slides in hand viewers?

- Phil -
- phils@xxxxxxxxxxxxxxxxxxx -



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