[Psml] Infocus Projectors

[Bob Miller]

All,

Poverty Bay has spent a lot of time studying digital projectors and, like
Bellevue, have added them to our education resources over the years. One of
the primary criteria we use is the short “Throw Ratio”.  A projector's throw
ratio is defined as the distance (D), measured from lens to screen, that a
projector is placed from the screen, divided by the width (W) of the image
that it will project (D/W). That is a long way to try to say that we need a
projector that will provide a wide picture when set up in the front of the
classroom. We found that few projectors actually considered the teaching
environment where a single instructor needs must control things from the
fort of the classroom without a lot of other complications. All of our
projectors have a very short throw capability and are in constant use. We
too worry about that day when a bulb dies and the cost to replace it makes a
replacement projector look economically enticing. I am intentionally not
specifying brand names in the broad distribution.

If you want to understand throw ratio with some graphic help there are
sights that will help. One of those is
http://www.theprojectorpros.com/learn-s-learn-p-theater_throw_ratios.htm  

Regards, 

Bob Miller
Poverty Bay



From: psml-bounces at usps.org [mailto:psml-bounces at usps.org] On Behalf Of
David J. Greene
Sent: Thursday, October 08, 2009 6:16 PM
To: boatsafe at comcast.net
Cc: United States Power Squadrons Mailing List
Subject: [Psml] Infocus Projectors

All:
Bellevue Sail & Power Squadron, D-16, has about 3 or 4 Infocus In24s and
earlier. They now are also obsolete. Our Seabelles, the mates adjunct to the
squadron, has held bake sales, etc and raised enough money to fund the
Education department for years with projectors etc. So we are equipment
rich.
We too will have to start looking at new projectors, since our 5 or 6 will
be becoming obsolete, perhaps not able to replace lamps, etc. So we are
interested in new projectors and looking forward to Infocus discounts on new
equipment, or on other mfg who have brighter projectors with higher
resolution.
P/L/C Dave Greene,  former SEO, and still teaching classes with those
projectors