I meant optical correction of course!
The new ones don't seem much different definition wise. 640x480 is somewhat primitive. What do films look like through them btw? One suspects they have a 'CAM' look i.e blurry.
To clarify the tracking ... does trackir require the use of GlovePIE to make it work? Reason I ask is that Vusix sent me this :-
"The GlovePIE and the VR920 software will work together, the TrackIR software just isn't compatible."
Meanwhile, they also tell me the "the AV310WS and AV230XL support 3D as does the AV920 but none of these will support head tracking". So, maybe, one could leave TIR to do the 6DOH tracking if it works.
Sorry to hammer you with all this stuff but you seem to be the only expert on this in AH.