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Monday, June 18, 2007

Digital Projectors

Discover the alternatives for producing your own scans in-house

Aspect Ratio. This is the ratio of the width of an image to its height. Nowadays, most projectors support multiple aspect ratios, but you should match your intended viewing material to what the manufacturer geared the product for.

ANSI Lumens. This is a measurement of the overall brightness of a projector. If you aren't sure you'll be able to close the window blinds or control overhead lighting, then you want a projector with higher ANSI lumens. ANSI lumens also can help improve image quality in a projector that has a lower resolution or contrast ratio.

Contrast Ratio. Because of the different technologies, contrast ratio measurements differ from LCD to DLP and LCOS units. High contrast ratios of 1000:1 and up in DLPs and LCOSs will deliver accurate detail and render saturated blacks, while a ratio of 400:1 is standard for LCD technology and will be able to output the same attributes as a DLP's higher number. In addition, lower contrast ratios can be sufficient if the room you're in is dark and the screen you're projecting onto is designed to help increase image quality.

Zoom Lens. This is a must-have, especially if you're using a projector in a room with which you're unfamiliar. Without a zoom lens, you'll be manually moving the projector forward and back to achieve a proper image size.

Throw Distance. A projector that can project a large image from a short or long distance is another asset.

Keystone Correction. Not a standard feature in all projectors, but extremely convenient, keystone correction automatically adjusts the picture on your screen or wall so that it accurately shows it in proper form. Without it, you may again have to prop up or manually move your projector to avoid a trapezoidal display. Keystone correction is particularly beneficial if you need to have your projector at an angle.

Weight. The newer models typically weigh 10 pounds or less, making them extremely light and portable without sacrificing quality and performance. More and more units are being called ultra-light, as some of them are coming in at under four pounds.

Wireless. Some models are capable of WiFi connectivity to limit tangling cables. If you want to be free from carrying a laptop around, there are units that support USB connections and PCMCIA cards.

Color Control. This is becoming an important feature to photographers. If you don't know the color of the wall or the screen quality where you're presenting, you may want to be working with a projector that allows you to do some on-the-spot color-correcting to the image. Some models have these controls right on the unit so the adjustment is quick and easy.

Finding the perfect tool for this new portfolio concept not only can create the “wow” factor in your presentations, but it might save you a bit of cash in the end by limiting the paper and ink expenses. So forget the printed book; be different. Technology is enabling you to be better, faster, stronger…and much bigger.


Aztek (800) GRAPH-55 www.aztek.com
Creo (800) 929-9209 www.creo.com
Epson (800) GO-EPSON www.epson.com
Hasselblad (Flextight) (973) 227-7320 www.hasselbladusa.com
Heidelberg (888) 472-9655 www.us.heidelberg.com
Hewlett-Packard (800) 752-0900 www.hp.com
Screen USA (Cezanne) (847) 870-7400 www.screenusa.com



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