Canon SX10IS PowerShot SX10 IS Camera User Guide - Page 261

259 z Speedlite 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]. • When [Flash Mode] is set to [Auto] the flash exposure compensation can be adjusted. When [Flash Mode] is set to [Manual], the flash output can be adjusted (p. 110). • In mode or when [Flash Mode] is set to [Manual], the output of an externally mounted flash can be adjusted in the flash output adjustment screen (p. 110). You can also adjust the flash output from the flash (the flash setting overrides the camera setting when both are set). For the optimal aperture values and ISO speeds for the distance to the subject, refer to the guide number listed in the flash's user guide. You can also adjust the flash output even when the camera is set to the E-TTL automatic flash exposure compensation mode by changing the flash exposure compensation setting. • In 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. z Other Canon Flashes (other than Speedlite EX series) • Since other flashes fire at full strength, set the shutter speed and aperture accordingly. 4 Press the shutter button halfway. • The flash is charged when its pilot lamp lights up. 5 Press the shutter button all the way to shoot the image. Appendix