To get maximum FoV, the fresnels are trimmed to fit under my eyebrow ridges, and against the side of my nose. A pair of lenses actually touch together on the upper nose bridge (but below the center of the eyebrow ridge).MaterialDefender wrote:You make me really curious... Since I'll disassemble my build anyway to put in new lenses, I guess I will try to find some good fresnels too for testing.
The images are stretched far enough the even with full FoV there is no visibility of the other half of the screen (but the outer corners are outside the FoV). When inside a game, it really is an amazing experience. Like I said, this arrangement provides a "supernatural" (beyond natural) FoV. Cutting down aspheric lenses may not provide this experience. I think it is the stacking of the outer 1/3 of 6-inch lenses with the center 1/3 that contributes to the extraordinary horizontal FoV.
Using aspherics may provide a better quality image, but at a reduced FoV. Immersion is more FoV dependent than image quality dependent, in my experience.
I have yet to try a pair of lens stacks for a stereoscopic test, but I do not see why it should be any problem.
Beware that the lens stacks must be in the "sweet spot" (try adjusting their position) or the result will be unsatisfactory. My fresnel lens stack may be optimized for my near-sighted vision, so YMMV.
If others try this, please report back...