Pentax Optio M50 Operating Manual page 99

• When the shutter release button is pressed halfway, the
brightness is metered and the exposure is determined.
• When the subject is outside the focusing area and you want to use
spot AE metering, aim the camera at the subject and press the
shutter release button halfway to lock the exposure, then compose
your picture again and press the shutter release button fully.
• If you use the [AE Metering] function frequently, you can save time
by assigning it to the Green button. (p.58)
Saving the AE Metering 1p.106
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