Speedlite 220EX, 420EX, 550EX, 580EX, Macro Ring Lite MR-14EX or Macro Twin Lite MT-24EX

z The flash will automatically adjust its output in the , , ,

, P, Tv and Av modes when [Flash Adjust] is set to [Auto]. The maximum flash synchro shutter speed is 1/250 second.

z In M mode or when [Flash Adjust] is set to [Manual], the flash will fire with manual adjustments. The maximum flash synchro shutter speed in this case is 1/250 second. Set the aperture to an appropriate value according to the flash’s guide number and the distance to the subject. Check the camera’s ISO sensitivity setting since the flash’s guide number will change with the ISO value.

z When [Flash Adjust] is set to [Manual], the flash output can be adjusted. When [Flash Adjust] is set to [Auto] the flash exposure compensation can be adjusted (p. 109).

z In M mode or when [Flash Adjust] is set to [Manual], the output of an externally mounted flash can be adjusted in the flash output adjustment screen (p. 110). When a Speedlite 550EX, 580EX, a Macro Ring Lite MR-14EX or a Macro Twin Lite MT-24EX is mounted on the camera, you can adjust the flash output from either the flash or the camera. (The flash setting overrides the camera setting when both are set.) To set it from the flash, you are recommended to use the flash’s manual mode. 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 this situation, the +2 step setting fires the flash at full intensity.

To shoot with the flash, you are recommended to set the white balance to the (Flash) setting.

Other Canon Flashes

z Since other flashes fire at full strength, set the shutter speed and aperture accordingly. Set the shutter speed to 1/125 second or slower, and set the aperture to a value appropriate to the flash’s guide number and the distance to the subject.

You are recommended to set the white balance to (Flash) to shoot.

4Press the shutter button halfway.

z The flash is charged when its pilot lamp lights up.

5Press the shutter button all the way to shoot the image.

Appendix

181