Technology & Learning - May 2008 - (Page 42)

ports for DVD players, HDTV, and VCRs. Some projectors come with audio inputs and outputs to receive sound, along with external speakers. as a trapezoid). Projectors may have a keystone correction mechanism built in to compensate for and correct the shape. Zooming and keystoning The projector’s zoom lens may be manual or automatic and some are remote controlled. Keystoning refers to the image distortion that occurs due to the angle at which the projector is aimed (the image will appear Other features/considerations Projection distance refers to the minimum and maximum distance between the projector and the screen. A shortthrow projector has a very small projection distance and can be mounted on an arm attached to your whiteboard or screen. The benefit of a mounted short-throw projector is that it eliminates the wires and opens up more floor space. Some projectors have networking capabilities, allowing administrative management from a remote PC. Most projectors include a remote control; also the fan noise level can differ between projectors. Jeffrey Branzburg is a contributing editor and columnist for T&L. A guide to the latest in projectors. LV-7365 CP745es Boxlight www.boxlight.com $1,595 This new DLP projector has a brightness rating of 2,600 lumens and XGA resolution. Weighing in at 6.4 pounds, it has an estimated lamp life of 2,000 hours, digital vertical keystone correction, and manual zoom/focus control. Canon www.canonprojectors.com $1,499 Canon’s new multimedia LCD projector has a short-throw distance with the ability to display a 100-inch diagonal image from 9.2 feet away. It is a 3,000-lumen, XGA resolution projector with a full digital connection to DVD players and PCs and vertical keystone correction. It weighs 7.3 pounds. » 2400MP Dell www.dell.com $1,029 Dell’s small 2400MP DLP projector is a bright 3,000 lumens and weighs 5.5 pounds. It is an XGA projector with an economymode option that extends the lamp life from 2,000 to about 2,500 hours. It supports both horizontal and vertical keystone correction. 42 | www.techlearning.com » » » ImagePro 8755 series Dukane www.dukcorp.com/av $945–$1,195 Dukane’s most popular LCD projector for K–12 schools has been the ImagePro 8755 series, which includes the 8755G and 8755G-RJ (the RJ has a network port built in for projectormanagement capability). Both are 2,200-lumen, XGA resolution projectors that feature 7W audio. Each weighs 7.7 pounds, has a lamp life of 2,000 hours or 3,000 hours in whisper mode, and includes digital keystone correction. http://www.canonprojectors.com http://www.boxlight.com http://www.dukcorp.com/av http://www.dell.com http://www.techlearning.com

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Technology & Learning - May 2008 Contents New@techlearning.com Editor’s Desk News and Trends E-Learning Gets Real Cover Story: Make Students Info Literate School CIO Product Guide Reviews Best of the Blogs What’s New LOY Profile Series

Technology & Learning - May 2008

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