Canon 420 EZ User Manual
Page 22
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3) Turn the flash’s nnain switch ON and
nnake sure the ready lamp lights up.
4) Cover the main subject with the AF
frame and press the shutter button
halfway.
•At this point, the near-infrared light
emits from the flash to choose the cor
rect aperture value.
•Both the X-sync shutter speed and
aperture values set automatically.