The look of the photography in those 3-Depix process films from the early '80s (Friday the 13th Part III) always made me think of anamorphic, because it generally had a shallow depth of field and very dreamy quality to it. My understanding is this process used a single lens for stereo acquisition. I wonder if it's possible that a mid or rear mounted anamorphic might have been used in some of these films or if it's the optics of the stereo adapter that gives the photography some of the feel of anamorphic in the defocused areas of the frame.
I'll have to go back and look now and see if the bokeh is stretched or not. It doesn't "feel" like shallow DOF spherical photography at all.
