Recording Menu 2 - Sony Alpha DSLR-A850 Instruction Manual

Recording menu 2

Flash mode
For details, see page 64.
Flash control
You can select the flash control mode to set the amount of flash light.
ADI flash
Pre-flash TTL
ADI: Advanced Distance Integration
TTL: Through the lens
• When [ADI flash] is selected, using a lens that is provided with a distance
encoder feature can perform more accurate flash compensation by using
more accurate distance information.
Notes
• When the distance between the subject and the flash cannot be determined (wireless
flash shooting, shooting with an off-camera flash using a cable, shooting with a
macro twin flash, etc.), the camera automatically selects Pre-flash TTL mode.
• Select [Pre-flash TTL] in the following cases, as the camera cannot perform flash
compensations with ADI flash.
– A wide panel is attached to the HVL-F36AM flash.
– A diffuser is used for flash shooting.
– A filter with an exposure factor, such as an ND filter, is used.
– A close-up lens is used.
• 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 method controls the lighting of the flash, factoring in the
focus distance information and light metering data from the
pre-flash. This method enables an accurate flash
compensation with virtually no effect from the reflection off
the subject.
This method controls the amount of flash light depending on
the data only from pre-flash light metering. This method is
susceptible to the reflection off the subject.
107