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Message: <blockquote data-quote="oleaf" data-source="post: 1649531" data-attributes="member: 52491">Ronh,You described the process much more cleanly than I had originally done.  It was just something I noticed I did from time to time and wanted to understand why I did it this way.  I'm not anal about IPD but believe many go way overboard and try to find a hard number.  I just did what seemed comfortable.  I've never measured my IPD and possibly never will.  Just seemed easier for a given distance to find the right and left field overlap.But... you should focus your eyes on the out of focus subject.  You don't want your eyes focused at infinity if you're going to look a an object at close range.  You're eyes must converge at close range... just like they need to be more parallel at infinity.Find a target... defocus... adjust IPD... refocus.  Maybe only do it when the view doesn't "feel" right.  Like going from 10 yards to 300 yards. Dennis,Maybe so.  It was just an idea that worked for me.  Cheers</blockquote>