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Click Plus (reference 9) allows to create a new sensor calibration file.
8.1.2 Creating a new light sensor calibration file
Power settings are temporarily overruled with values in edit/creation mode. Exiting this page will
restore the initial settings.
Required tools
Spectroradiometer
Prerequisites
1.
Place a spectroradiometer in the auditorium. Position it in such a way it meets the following requirements.
•
Perpendicular to the screen.
•
In the auditorium sweet spot.
•
In such a way it can measure the reflected light from the center of the screen.
2.
Set up the ambient light conditions as it should be during the play-out of the movie (e.g. only the stairs and
emergency exit lighting are switched on).
3.
Project a full white test pattern with the desired aspect ratio (flat or scope).
How to create a light sensor calibration file
1.
Click on the New icon, located on top of the list.
Image 8–2
A window is displayed with a new (untitled) calibration file.
Image 8–3
2.
If it is not already done Select a Test pattern in the list to display a test pattern on screen.
3.
Measure the current light output with the spectroradiometer. The default target value is 14 foot Lambert
(fL).
4.
Adjust the Power slider until the spectroradiometer measures the target value. Several iterations will be
necessary.
Configuration - Light output
R5910032 /00
Freya
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