I have seen a microscope setup in a lab with a variable stereo base (realized with symmetric movable mirrors covering different widths from the CMO).
This shall in principle modify the stereopsis of the system, however by changing and adjusting this I could not detect "any" differences in the "depth perception" (which I was expecting).
So my question is what determines the "depth perception" in stereo microscopes?
Please note that I do not mean the stereopsis mechanism, but the "amount of depth perception"
Do you have an equation or a formalism to determine it?
A stereomicrope uses one of two main types of designs (Greenough or the CMO) to induce the approximately 10-12 degrees of convergence angle for viewing. When you are adjusting the inter pupillary distance you are just getting the best focus for the microscope's convergence angle. The observer then "interprets" this convergence difference as "depth". You can find a good description of the optics here (although it is sponsored by Nikon): http://www.microscopyu.com/articles/stereomicroscopy/stereointro.html
do you mean the inter pupillary distance (and not the stereo base) is key to stereopsis?
Please note that I do not mean the stereopsis mechanism, but the "amount of depth perception"
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