Samsung EC-EX2FZZBPBUS Mode D'Emploi

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Shooting options
  83
Adjusting brightness and color
Locking the exposure value
The adjusted exposure value locks when [L] is pressed, and 
remains locked until [L] is pressed again.
Adjust the exposure manually. (p. 82)
Press [L].
• 
The AEL icon turns on.
    p A h V
Adjusting the exposure using the front wheel
In Shooting mode, press the front wheel.
Rotate the front wheel to adjust the exposure.
Press the front wheel again or [o] to save your 
settings.