Minolta Dimage A1 - Manual (Page 92)

92 R ECORDING MENU
FLASH CONTROL
Select the manual option from flash control in section 1 of
the recording menu. With the built-in flash raised, press the
exposure compensation button (1). Use the rear control dial
(2) to select the manual flash power ratio; the front control
dial compensates the ambient exposure.
Press the shutter-release button partway down or press the
exposure-compensation button to to complete the opera-
tion. The power ratio and the manual flash indicator is dis-
played on the monitors when the flash is raised.
Power ratio
ADI, pre-flash TTL, and manual flash controls are available. Flash control is changed in section 1 of
the recording menu (p. 80).
ADI (Advanced Distance Integration) flash metering - combines distance information from the aut-
ofocusing system with information from a pre-flash exposure. Unlike conventional TTL flash metering,
ADI is not influenced by the reflectance of the subject or background ensuring optimum flash expo-
sures.
Pre-flash TTL - calculates flash exposure with a pre-flash only. This mode must be used when using
close-up filters or filters that reduce the amount of light entering the camera such as neutral density
filters. Pre-flash TTL must be used when a diffuser is attached to the built-in flash or an external flash
unit.
The camera will automatically switch from ADI metering to pre-flash TTL when a low-contrast subject
is preventing the autofocus system from focusing. If the autofocus system cannot lock on the subject,
use manual focus; the ADI metering will remain in effect.
Manual flash control - fires the flash at full power, 1/2, 1/4, 1/8, or 1/16 power. Because no pre-flash
is used, it can be used to fire slave flash units. Manual flash cannot be used with red-eye reduction or
wireless.
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