Apple IMac - Page 266

Adjustments Video - 21
3 Using the Display Service
Utility, display the All-
White screen test. Hold a
light meter or
photometer against the
center of the screen.
The screen luminance
reading should be one of
the following:
• 21 (foot candles) on
light meter Model R77
• Upper end of 10 on
the 10 through 18
scale of light meter
Model L-248
• 21 (foot candles) on
the red scale of light