High-Speed Sync (Fp Flash); Feb (Flash Exposure Bracketing) - Canon EOS D30 User Manual

Flash Photography with the EOS-Dedicated 550EX Speedlite

High-Speed Sync (FP Flash)

When the 550EX Speedlite is set to high-speed sync
synchronize at any shutter speed of 1/200 second or faster, thus providing high-speed sync
(FP) flash operation. When high-speed sync is On, the
High-speed sync is effective for portrait photography in the following situations:
(1) When you want to use daylight sync flash for a portrait, and widen the aperture (reduce
the aperture value) to blur the background.
(2) When you want to produce a catchlight in the subject's eyes.
(3) When you want to use fill flash to eliminate shadows.
Normal flash

FEB (Flash Exposure Bracketing)

With the 550EX Speedlite, FEB (flash exposure bracketing) automatically shoots three flash
shots, bracketing the exposure by as much as ±2 stops in 1/2-stop increments, without
changing the background exposure.
Normal exposure (0)
FEB is applied from the 550EX Speedlite. For details, see the User's Guide for your
Speedlite.
For best results use
You can set the camera to change FEB settings in 1/3-stop increments. (C.Fn-4
98
Underexposure (-1.0)
(single-image shooting) drive mode. ( 67)
mode, it can automatically
icon appears in the viewfinder.
FP flash
Overexposure (+1.0)
124)