Apple 5420/180 Manuale Utente
Adjustments
Video - 38
12 Check the screen
luminance again and
reset it to the proper
reading by repeating the
previous step that set it
to one of the following:
• 21 on light meter
Model R77
• Upper end of 10 on
light meter Model L-
248
• 21 footcandles on
light meter Model 246
• 25 fL (foot lamberts)
on a photometer