provided with the Video Essentials or AVIA test DVDs, or can be purchased from the Imaging Science Foundation (www.imagingscience.com).
TINT (also known as 'hue') is essentially the ratio of red to green in the color portion of the image. If TINT is decreased, the image will appear redder, and increasing it will cause the image to appear green- er. To set TINT properly, look at the color bar pattern through a blue filter (or mute the red and green out- puts). Adjust TINT until the middle two tall color bars match the middle short color bars (see color bar drawing).
COLOR (also known as 'saturation') increases or decreases the amount of color in the image. To set COLOR properly, look at the color bar pattern through a blue filter (or mute the red and green outputs). Adjust COLOR until the outer two tall color bars match the outer short color bars (see color bar drawing).
For setting CONTRAST and BRIGHTNESS, please refer to the PLUGE pattern below:
Set contrast untill there is no 'blooming'
in this bar.
Below black
Above black
CONTRAST adjusts the white level of the image. To adjust this properly for CRT projectors, adjust CON- TRAST until there is no blooming (or distortion) in the brightest bar in the PLUGE pattern (see above). For
BRIGHTNESS adjusts the black level of the image. To adjust this properly, adjust BRIGHTNESS until the 'below black' bar JUST disappears, but the 'above black' bar is still barely visible.