[photo-3d] Slide bar - part II

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

While on the subject of slide bars, one interesting 
idea is to use a stereo camera on a slide bar.  Taking 
two pictures at the two extremes of the slide bar travel, 
gives you a number of interesting combinations.  Let's 
call the chips A, B, C, D.  You get the following:

1. AD: Hyperstereo at Camera base + slide bar travel
2, AC or BD: Normal stereo at slide bar base
2. AB or CD: Normal stereo at camera base
3. BC: Hypostereo at slide travel - camera base

For my 60mm RBT S1 and 80mm Bogen bar, I can get
140mm, 80mm, 60mm, 20mm.  Of course, I can only
get all 4 combinations if I shoot two pictures
at each extreme.

Personally, my minimum travel stereo gear includes
the following:

- Stereo camera
- Single camera & two lenses, 50mm macro and 28mm
- Bogen slide bar
- Extremely compact tripod
- Flash, batteries, film, etc.

These fit in my compact camera case.  I have used
the slide bar mainly for close-ups.

George Themelis