Nikon 4799 F6 Instruction Manual - Page 153

Exposure area in FV Lock Shooting situation Single Speedlight Flash mode i-TTL mode Auto Aperture flash Multiple flash with Advanced Wireless Lighting i-TTL mode Auto Aperture flash Non-TTL Auto flash (Master Speedlight) Exposure area 6mm-dia. at center Exposure area measured by the Speedlight Entire frame Exposure area measured by the Speedlight • Auto FP High-Speed Sync Auto FP High-Speed Sync is activated automatically at shutter speeds faster than 1/250 sec., allowing auto flash control at all shutter speeds up to and including 1/8,000 sec. As a result, the flash can be used without concern for maximum sync speed, even in daylight shots taken at maximum aperture. To use Auto FP High-Speed Sync, choose "1/250 (FP auto)" for Custom Setting "e1: Flash sync speed" (x 104). Auto FP High-Speed Sync supports Advanced Wireless Lighting. With a single Speedlight, i-TTL flash control, Auto Aperture flash, DistancePriority manual, and manual flash mode are available. In multiple flash, you can choose from i-TTL flash control, Auto Aperture flash, Non-TTL Auto flash, and manual flash mode. • AF-Assist for Multi-Area AF The SB-800/SB-600 features AF-assist illuminator linked to the F6 focus areas, allowing autofocus to be used even at night, regardless of the subject's position in the frame. AF-assist illuminator can be used in all AF Area modes, including Single Area AF, Dynamic AF, Group Dynamic AF, and Dynamic AF with Closest-Subject Priority. If the subject is poorly lit, the AF-assist illuminator will light automatically when Single Servo AF is used in combination with a 24-105mm AF Nikkor lens (if a lens wider than 35mm is used, the illuminator may not light if the focus area at the left or right edge of the frame are selected). Flash Photography 153