[photo-3d] Re: Moving pinholes (...)

["Abram Klooswyk" <abram.klooswyk@xxxxxx>]

Lincoln (Kamm) 12 Nov 2000:
> I have a pinhole apurature based homemade stereo
> camera with lenses.  I wanted to change the default
> stereo window to put the stereo window automatically
> farther away then it is at the moment.
> Would it work to move the pinholes apart or together a
> bit, or will that cause distortion in the image if it
> isn't in the center of the lens?
(...)

"Pinhole with lenses" seems a contradiction, or do you mean lenses 
with a small fixed aperture diaphragm?

When the diaphragm is between the lens elements (as usual), or 
close to a not too bulky objective, moving the apertures will not 
change the distance of the virtual ("built-in") stereowindow, but 
it will change the stereobase. This effect is only useful for 
macro, it was used by Koo Ferwerda in his single-lens-two- 
diaphragms-macro-stereocamera.

Abram Klooswyk