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Document Camera/Presenter. www.protechprojection.com. www.protechprojection.com. Styles/Costs. $709.73. $1,730.13. $1,972.78. $3,144.06. Document Camera Parts. Video camera head Light Connectors (on rear) Work surface Power on/off Light on/off Close up lens Pull ring
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Document Camera/Presenter www.protechprojection.com
Styles/Costs $709.73 $1,730.13 $1,972.78 $3,144.06
Document Camera Parts • Video camera head • Light • Connectors (on rear) • Work surface • Power on/off • Light on/off • Close up lens • Pull ring • Auto focus on/off • Zoom keys www.onyxeng.com
“Real time” Presentation For Comprehensible and Creative Class work Presenter + Projector + PC Presentations with 3Ps persuade and impress. Change smoothly from presenter to PC. www.protechprojection.com
Hooking-Up to a Desktop Computer VGA (output) VGA (input) EXTRON VGA (output) Projector VGA (input) RGB RGB (input) (output) ELMO VGA (input) Monitor
Hooking-Up to a Laptop Laptop VGA (output) Projector VGA (input) RGB RGB (input) (output) ELMO
INPUT VIDEO Switch – Computer MAIN Switch - ELMO www.protechprojection.com
Glare Glare can ruin a good picture. Glossy pictures can reflect light from the ceiling lights in the room - not the lights attached to the document camera, but overhead fluorescent lights. Good Examples of Bad Examples:
Solutions • Move the document camera • Turn off overhead lights • Wedgies! Since it is not always convenient to move the document camera or turn off the lights in the room, wedgies are an ideal and simple answer.
Wedgies • Use something to wedge under one side of the document camera to make the glare not reflect into the lens of the camera. The following are a few suggestions for wedges: • Block of wood • Door stop • Soda pop screw top • Book • What else can you think of using?
The Problem The Solution
Tricking Most document cameras have an auto iris feature that can be useful. The auto iris looks at the entire picture in the camera's field of view. It tries to figure out what is the brightest part of the picture. It will then adjust the iris or close the iris to let less light into the lens. The background of most document cameras is white. When the upper lights are turned on, the white background become blinding to the camera lens. Therefore, the document camera closes the iris down to allow in less light. However, not only is the white background dimmer, but so is the image you are trying to show. Since you now know HOW the document camera works, you can work to TRICK the document camera by placing a dark background behind what you are trying to showcase.
The Problem The Main Idea of this picture is the remote control. However, the iris of the camera has closed down so much you can barely read the words on the buttons. Some Solutions Using darker backgrounds of different materials. Manila Envelope
Zooming Since you know that the iris of the camera will close and make your image or picture dim, make sure you zoom in close enough to fill the screen with the subject. The Problem The main idea of what is under the document camera is the photograph, not the white background of the document camera. The Solution By filling the screen with the photograph, you do not have to worry about the iris of the camera closing too much
Zooming • There are two ways to zoom: • Push down the knob on top of the arm • Push the arm down closer
Citations • www.protechprojection.com • www.provantage.com • www.onyxeng.com • www.polycom.com