Originally Posted by
Donald Miller
I understood this but I wanted to point out the falacy of the 90 degree angle. What you seem to have failed to comprehend is that it is not the leg under a lens that provides the support in the tripodal structure. It is the support of each of the structural members as a whole and complete cohesive structure. Each of the legs of a tripod provide two of the sides to three triangles with the ground plane itself making up the third side and also the fourth triangle itself. In your quad pod contraption you can not have anything other than rectangular/multiangular forms and they are generally recognized as being inherently unstable when compared to a triangular form.
Taking your worst case scenario, the only way that a triangular stucture made up by a tripod could become unstable is if the structural design limits of the load capacity of one of the leg forms is exceeded or if the leg angles (spread angles) are of an inadequate spread. Nothing in a quad pod contraption alleviates those conditions. All that it does is bring another problem to the mix...that being arranging the legs so that you don't have an unstable platform at the ground level. By the way at the various hands on shows you mentioned, how many saw this device set up on anything other than a level floor? The last time I was aware neither Samys nor B and H had rocky unlevel floors in their showrooms.
Best regards,
Donald Miller
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