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[filmscanners] Re: scan resolution for digital projection



John,

As with scanning for printed output you must first define your output
resolution.
That will be the native resolution of the projector you intend to use.  This
year,
most projectors have a native resolution of at least 1024x768, some are
higher.
Obviously the higher the better, although this  really depends on your
screen size
which should be determined by your audience seating (how far is the farthest
 viewer from the screen?).

Back down to earth now.  Get the brightest and highest resolution projector
you can.
Scan so you images will match, or closely match, the projector's native
resolution.  Set you
video card on your computer to display in the same resolution as the
projectors native
resolution.  That way there will be no resolution scaling and you image will
look it's best.

If you need further help you may contact off list.

Bob Kehl
Principal
Kvernstoen, Kehl & Associates
Consultants in Sound and Audio-Visual Technology
bobkehl@kvernkehl.com




----- Original Message -----
From: "John Matturri" <jmatturr@earthlink.net>
To: <bobkehl@kvernkehl.com>
Sent: Saturday, September 21, 2002 10:04 PM
Subject: [filmscanners] scan resolution for digital projection


Not quite on topic. . .

I need to scan slides to be used in a presentation that will use a
digital projector. My current plan is to simply have jpegs in a file and
to scroll through them, using Irfanview, by hitting the spacebar on a
laptop. I have no way of finding out what model of digital projector
will be used. Any idea of a safe generic resolution to use the final
jpeg? (Also, does anyone with experience at these things see any problem
with scrolling through the images ith the viewer?)

John M.


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