This was a reeealy vexing problem, except when using a 1:1 VF rangefinder (Canon P/ R3A etc). It seems, the problem is NOT focusing with the "worse" eye, but closing the "better" one to avoid multiple images. Now I have a 1.4 magnifier on Leica M6 .72, effectively creating a 1:1.008 VF, and, Voila ! I can keep both eyes open to shoot !!
Last edited by srtiwari : 02-20-2011 at 09:50.