[simpits-tech] Visual system questions (Gene) and an idea

[Frank Riedel]

Hi G. Congrats... please keep me informed for your release....
What Beamers are you using ??

Regards
Frank

2012/2/1 Wayne Ledzian <wledzian1 at comcast.net>

>
>
> To fully correct an image with lenses alone would require specialized
> (read "$$$$") optics.  A simple mirror would, however, get you fairly
> close, the main benefit being fewer wasted pixels.  You'd still need the
> warping software to get the rest of the way.
>
> There are focus issues with our setup if you're specifically looking for
> them, but they're fairly minor.  They're primarily in the form of a slight
> misalignment between the RGB channels towards the edges, and a small amount
> of focal blur, generally less than 1 pixel worth. It's really not
> noticeable once everything is aligned and blended.  This was a
> consideration when choosing our projectors;  in order to have minimum skew
> at the joints, we wanted a long-throw projector.  In order to have maximum
> depth of field (distance at which focus is acceptable), we wanted a small
> lens.
>
> If we had used short-throw projectors, we'd have had to mount them much
> closer to the screen, with the result of more severe focal issues and
> strong skew at the edges.
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*Frank Riedel*
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