[photo-3d] Re: Base Calculator

["Tom Deering" <photo-3d@xxxxxxxxxxx>]

See the page at http://www.deering.org/math/

Then you'll know more than George.  :^) :^)

Tom Deering


--- In photo-3d@xxxxxxxxxxx, "Joseph Valvo" <jvalvo@xxxx> wrote:
> Now the real reason for posting this message. Being new at Stereo 
can anyone tell me if p=1.2 is actually a constant to be used for all 
lenses, or does it change somewhat with focal length?  How was p 
arrived at? Is it a true calculated value or an empirical. Was it 
derived from astronomy? If it changes with FL how so? I cannot see
how 
it could increase linearly at the slope of my focal lengths otherwise 
b would always be the same. Or does p actualy decrease as FL 
increases? How about it you experts?