Samsung Digital Camera (empowered to achieve) - Manual (Page 204)

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Setting the Exposure
ƈ Metering is weighted at the center of the screen.
Use this metering when you want to compensate the exposure
by experience, instead of leaving it to the camera.
The illustration shows that sensitivity increases as the pattern
height increases (center). This mode does not automatically
compensate for backlit scenes.
ƈ With spot metering, brightness is measured only within a limited
area at the center of the screen as shown in the illustration.
You can use this in combination with the AE lock (p.205)
when the subject is extremely small and proper exposure is
difficult to obtain.
Using the Center-Weighted Metering
Using the Spot Metering