145R5911705 /02 Bragi
8.5.6 Color level adjustment procedure
Color level introduction
When using several projectors in a complete setup, there will always be a slightly difference in the color
saturation between the projectors. This is not visible
The purpose of black level correction is to ensure a uniform black level in multi projector setups. Even when
two projectors are of the same type, different projectors will output slightly different colors for black due to
minor variations in their optical components. So if the projected image of the projectors overlap, there will be 3
different black levels: one for the zone where only the picture of the left projector (zone 1), one for the Blend
zone (zone 2), and one for the zone where there is only the picture of the right projector (zone 3).
Picture Left Picture RightBlend Zone
Image 8–47
How to perform an RGB adjustment
1. In the main menu, select Installation / Blend and mask / Black Level for all projectors in the setup.
The Black level menu is displayed, containing the sliders for color adjustment.
2. Use “black” test picture for the projectors.
3. Observe manually the color saturation from each projector unit, and identify the difference.
4. If one projector, as an example, has more red in the test picture, select the red slider in the black level
menu for this projector and adjust the slider with the arrow keys to obtain a similarity in the rendering.
5. Repeat for every projector and color until the desired result is achieved on screen.
Installation menu
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