Flash Exposure Confirmation - Canon Speedlite 550EX Instructions Manual

7. Flash Exposure Confirmation
OT
When a correct flash exposure has been
obtai ned, the fl ash exposure
confirmation lamp on the back of the
Speedlile lights in yellow-green for 3 sec.
I!
the flash exposure confirmation lamp
does not light after the flash fires, the
picture may have been underexposed.
Move closer to the subject and try again.
8. Using the Zoom Button and Wide Panel
ETTL
Zoom samm
uu
1 '-' , , • • • " " ..
'Il:
o
MODE
+
SEL I SET ZOOM
"gcg;ggg
18
The Spee dl ite 's flash head zooms
Iy to provide
adequate flash
fo r the current lens focal
e Speedlile can provide
ash coverage for 24mm to
s focal lengths. If a zoom lens
the flash head also zooms to
ns focal length. The flash
om selting can also be set
automalical
coverage
length. Th
adequate 11
105mm len
is zoomed,
suit the Ie
head 's zo
manually.
The Speedlite 's bu ilt-in wide panel
provides flash coverage for 17mm wide-
angle lenses.