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Re: Stereoscopic photography equipment?
It is the camera intervalometer setting which governs whether or not you will have stereo cover of a stretch of ground. The basic set-up of split verts, with a single area collector with a shorter focal length should all give you decent stereo cover. With the split verts the preferred setting is usually 10% sidelap (ie overlap between port and starboard), and 70% endlap ir overlap between frames of the same camera (the exact figure may vary). Having said that, Ive gone through Luftwaffe sorties which have 90% or more endlap. My conclusion is that Luftwaffe aircrews often didnt like the idea of bringing back unused film so had their intervalometers turning on maximum settings much of the time.
On another note stereo photography was being taken in the first world war and stereo pairs were being routinely distributed by the Brits c late 1916
best
Chris Going
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