Canon Speedlite 540EZ Manual page 18

2. Manual Flash Shooting
,Tnhie,f,1?EZ Pr°Vi?S f'ff' ma"Ual "ash sett'n9s ranging from full power
to 1/128 power, adjustable in 1-stop increments.
' f^hnhlh H ?in9 COntr°US flaSh exposures 'n manual flash mode, prevent the
nniZ ov®rheatin9 bV limiting the number of continuous flashes accord¬
ing to the power setting, as follows: ''''
(1) 1/1, 1/2 power: Not more than 15 continuous flashes
(2) 1/4, 1/8 power: Not more than 20 continuous flashes
(3) 1/16, 1/32 power: Not more than 40 continuous flashes
1 Set the camera's shooting
mode to aperture-priority AE
mode
(Av)
or manual expo¬
sure mode (M).
2
Set the flash mode to manual
(M).
• If a shooting mode other than
aperture-priority AE (Av) or
manual exposure mode (M) is
set, the minimum aperture
value of the lens will blink in the
camera's LCD panel when the
shutter button is pressed
halfway.
3 Press the Select/Set button.
• The flash output level blinks in
the flash unit's LCD panel.
4
While watching the flash unit's
LCD panel display, press the
plus button or minus button to
set the desired flash output
level amount.
• Each press of the Plus button
or Minus button increases or
decreases the output level by
1 stop.
5 Press the Select/Set button
again so that the output level
display stops blinking.
• The output level will automati¬
cally stop blinking if 8 seconds
elapse before the Select/Set
button is pressed.
If the flash has been fired 15 times continuously at 1/1 or 1/2 power allow the
Speedlite to rest for 15 minutes to prevent the flash head from overheatinq
Overheating can cause the flash head to breakdown. 9'