Assertion: projector's manufacturer | /r/CapableOf | measure the brightness
Facets:
value: at the average brightness
type: MANNER
value: at the center of the screen
type: LOCATION
Source sentences:
text: (By the way, some manufacturers are now quoting "Center Lumens" instead of ANSI lumens because the number is larger--measuring just the brightness at the center of the screen rather than the average brightness overall, as the ANSI method does.