Re: [photo-3d] Re: focus and convergence

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

>I had him put on my reading glasses and try again.  It worked.  

This is like giving him a viewer.  Reading glasses are like
viewer lenses with longer focal length.

>His eyes thought he was looking at a distance but I had caused them 
>to focus close so his convergence then matched the focus.

He still has to decouple accommodation (focus) and convergence
because as he explores the picture moving from front to back
his convergence changes while the accommodation is fixed.
This is true anytime we look at stereo slides through a viewer.

George