On Thu, Oct 06, 2011 at 12:00:36 -0400,
Simo Sorce <simo(a)redhat.com> wrote:
My main use case here is video projectors, and in that case there is no
way on earth you'll ever know the DPI as it depends on the distance from
the wall, and again even if you knew the distance from the wall you'd
know nothing because the optimal DPI will also depend on the distance of
the crowd from the wall.
What you really want to know is the resolution per angle or arc. And that
would be relatively constant for a project regardless of distance from
the surface it is projecting on.