Sony SLT-A77VM - Manual (Page 134)

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Adjusting the brightness of the image
• ADI flash is only available in combination with a lens that is provided with a
distance encoder. To determine if the lens is equipped with a distance encoder, refer
to the operating instructions supplied with the lens.
• This item cannot be set when the exposure mode is set to Sweep Panorama, 3D
Sweep Panorama, or [Night Scene]/[Hand-held Twilight] in Scene Selection.
To adjust the amount of built-in flash light manually
You can adjust the amount of built-in flash light manually when [Flash
control] is set to [Manual flash].
MENU button t 2 t [Power ratio] t Select the desired
setting