Konica Minolta DiMAGE A2 - 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 operation. The power ratio and the
manual flash indicator is displayed on the monitors
when the flash is raised.
Power ratio
1
2
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 autofocusing 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 exposures.
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.