Increasing Image Contrast

Some images display best when the contrast between the image and its background is increased. To increase contrast, press the CONTRAST button on the document camera. To turn contrast off, press the button again.

 

 

 

 

Corrects

Rotates the

 

 

 

 

color shifts

image 90°

INPUT

 

PAUSE

OPEN IRIS CLOSE

 

WHITE

IMAGE

RGB1

AUTO/MANUAL

BALANCE

ROTATION LAMP

MAIN

 

 

 

 

 

UPPER / BASE / OFF

 

 

 

 

 

 

 

RGB2

CLEAR MODE

 

 

CONTRAST

POSI / NEGA

 

 

 

TELE ZOOM WIDE

AUTO FOCUS

 

 

 

 

Reduces noise in the image

Increases or

decreases contrast

Adjusting the White Balance

Normally, the document camera automatically adjusts the screen’s white balance. However, it may be necessary to correct for color shifts in different lighting conditions.

If the displayed image has a color cast, press the WHITE BALANCE button on the document camera once to correct the color shift. If you later want to return to automatic white balance adjustment, press the button a second time. (See page 30 for manual white balance adjustments using the document camera’s on-screen display.)

Rotating the Image

You can rotate the image by 90° in a counterclockwise direction each time you press the IMAGE ROTATION button on the document camera. For instructions on rotating the image using the on-screen display, see page 30.

Reducing Noise in the Image

To reduce noise in the projected image, press the CLEAR MODE button on the document camera. To exit this mode, press the button again.

28Using the Document Camera