Canon EOS-1V HS Instructions Manual page 90

Flash Photography with Speedlite 550EX
FEB (Flash Exposure Bracketing)
With the Canon Speedlite 550EX, three successive flash shots can be
bracketed automatically up to ±3 stops in 1/3-stop increments. The flash
output is changed for the three shots while the background exposure
remains the same.
Correct exposure (0).
• Flash exposure bracketing is set with the 550EX. For details, see the
550EX's Instructions booklet.
• The flash exposure bracketing amount set with the 550EX is indicated by
the flash exposure level indicator in the camera's viewfinder.
• Make sure the Speedlite 550EX is ready before taking the next bracketed
shot. Single-frame shooting (
C.Fn-6-2 enables the flash exposure bracketing amount to be set in 1/2-stop
C.Fn
increments. (→p.102)
90
Underexposure (–1 stop).
) is recommended.
Overexposure (+1 stop).