Canon Powershot SX20 IS User Manual page 159

Speedlite 220EX, 270EX, 430EX II, and 580EX II
•
The maximum flash synchro shutter speed is 1/250 second.
•
The flash will automatically adjust its output when [Flash Mode] is set to
[Auto]. Flash exposure compensation and safety FE can be set when the
flash is set to auto exposure. However, when performing flash exposure
compensation with the camera, make sure to set the flash exposure
compensation on the flash to [+0].
•
The flash output can be adjusted on the camera or the flash if [Flash
Mode] is set to [Manual]. With Speedlite 220EX and 270EX, settings
cannot be made on the flash. In D mode, you can set the flash output
with the camera even if the flash unit is set to E-TTL automatic flash
exposure compensation. [E-TTL] will display on the flash, but the flash will
fire manually. Also, if the flash compensation value is changed on the
flash, the flash output will also change.
•
Settings available on the camera are as follows.
Item
Flash Mode
Flash Exp.Comp
Flash Output
Shutter Sync.
Slow Synchro
*5
Wireless Func.
Red-Eye Corr.
Red-Eye Lamp
Safety FE
Clear Flash Settings
*1 Fixed to [Manual].
*2 1/64 for Speedlite 220EX, 270EX and 430EX II.
*3 Not available with Speedlite 220EX.
*4 Fixed to [On].
*5 Settings aside from On/Off are set on the flash. Not available with Speedlite 220EX or 430EX II.
When set to [On], [Shutter Sync.] cannot be set to [2nd-curtain]. Even if you set [Shutter Sync.] to
[2nd-curtain] with the camera, it will change to [1st-curtain].
*6 Fixed to [Off].
*7 [Slow Synchro], [Safety FE], [Red-Eye Corr.] and [Red-Eye Lamp] can also be returned to their
default values using [Reset All] in the camera's 3 menu (p. 52). Setting is not available with the
Speedlite 220EX.
Using an Externally Mounted Flash (Sold Separately)
Options
Auto/Manual
–3 to +3
*2
1/128 to 1/1 (in 1/3 steps)
1st-curtain/2nd-curtain/Hi-Speed
On/Off
On/Off
On/Off
On/Off
On/Off
*7
Resets settings to their default values.
Shooting mode
G M
*3
*4
B D
*1
–
*4
*6
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