scott wrote:
> 
> Makes the image look square on the wall/screen, even if the optical axis 
> of the projector is not exactly perpendicular to it (good if the 
> projector is portable, not much use if it is going to be fixed).
> 

For fixed position lens shift rocks 100-0 over keystone. Only reasonable 
keystone is auto-keystone for portable projects. If keystone is manual, 
lens shift rocks over it, even on portable projector.

-- 
Eero "Aero" Ahonen
    http://www.zbxt.net
       aer### [at] removethiszbxtnetinvalid

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