Buyer’s guide to short-throw projectors
Posted on 16 Jun 2012 at 17:16
Author: George Cole
Tired of trying to get a working image in a standard classroom? George Cole has six short-throw projectors that will fit into any space
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Installation Issues - Short-thow Advantage
I've come across numerous cases where a long throw projector has been installed directly on to the ceiling of the room instead of being 'normal' to the screen (presumably to save money or 'hide' the projector). Trapezoidal correction of the projected image has then to be used to match the screen/whiteboardg giving a different number of pixels for the top and bottem rows of the image on the screen.
The resulting image has a very low effective resolution for text due to the vertical lines crossing pixels.
A short-throw projector would eliminate this problem as it uses a special lens to optically make the correction.
By jcaiken on 2 Jan 2013
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