Vidikron Vision 15 Benutzerhandbuch

Tint: Tint or “hue” is essentially the ratio of red to green in the color portion of the image. 
When tint is decreased, the image appears redder; when it is increased the image appears 
greener. To set the tint, select Tint from the Adjustment menu and press ENTER. While 
looking at the color bar pattern through a blue filter, adjust the tint level until the cyan and 
magenta color bars (on either side of the green bar) appear to be a single shade of blue. 

Sharpness: “Sharpness” is the amount of high-frequency detail in the image. To adjust 
sharpness, select Sharpness from the Picture Adjust menu and press ENTER. On your 
external test pattern source, select a pattern like the one shown in Figure 4-5. Adjust as 
needed, looking for white edges around the transitions from black to gray and 
differently-sized lines in the “sweep” patterns at the top and bottom. Lower the sharpness 
setting to eliminate them. 

Gamma: The normal gamma setting of 2.2 is correct for almost all signals and conditions. If 
excess ambient light washes out the image and it becomes difficult or impossible to see 
details in dark areas, lower the gamma setting to compensate. This will improve contrast 
while maintaining good details for blacks. Conversely, if the image is washed out and 
unnatural, with excessive detail in black areas, increase the setting. Again, good gamma 
improves contrast while maintaining good details for blacks and whites. 

Color Temp.: To choose a color temperature setting, select Color Temp. from the Picture 
Adjust menu and press ENTER. (Color temperature defines the “color of gray.”) The choices 
are 5400K, 6500K, 7500K and 8500K. The default setting, 6500K, is appropriate for most 
situations. Higher settings produce a “bluer” picture; lower ones impart a reddish hue to the 
image.

Like the Brightness and Contrast controls, the color and tint controls are 
interactive. A change to one may require a subtle change to the other in 
order to achieve the optimum setting.