Pentax Optio Digital Camera 750Z - Manual (Page 178)

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9
Digita
l Ex
posu
re
M
e
terin
g
Fu
nctio
n
Use the gray scale chart below as a guide when metering the brightness
(reflectance) of the subject with a reflected digital exposure metering.
Medium gray
(18% reflectance)
White Light gray Dark gray Black