Sony SLT-A99V α Handbook - Page 121

Flash control MENU button t 2 t [Flash control] t Select the desired setting ADI flash Pre-flash TTL 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. ADI: Advanced Distance Integration TTL: Through the lens • When [ADI flash] is selected, using a lens that has a distance encoder feature can provide more accurate flash compensation by utilizing distance information. Notes • When the distance between the subject and the flash cannot be determined (wireless flash shooting using a flash, 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 item cannot be set when the exposure mode is set to Sweep Panorama, or [Night Scene]/[Hand-held Twilight] in Scene Selection. Advanced shooting 121