Feb (flash exposure bracketing), High-speed sync (fp flash) – Canon EOS D30 User Manual

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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)

Underexposure (-1.0)

Overexposure (+1.0)

FEB is applied from the 550EX Speedlite. For details, see the User’s Guide for your

For best results use

(single-image shooting) drive mode. (→67)

You can set the camera to change FEB settings in 1/3-stop increments. (C.Fn-4 → 124)

Flash Photography with the EOS-Dedicated 550EX Speedlite

High-Speed Sync (FP Flash)

When the 550EX Speedlite is set to high-speed sync

mode, it can automatically

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

icon appears in the viewfinder.

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

FP flash