Shutter-Priority Ae Mode [A-Ttl] - Canon Speedlite 300EZ Manual

2, Shutter-priority AE Mode [A-TTL]
Set the camera to "Tv" to set the desired X-
sync speed. The X-sync shutter speed can
be set between 30 and 1/250 sec with the
EOS 620, and between 30 and 1/125 sec
with the EOS 650. The aperture is set
automatically.
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1) Turn the main switch ON and make sure
the ready lamp lights up.
• The shutter speed will be set to the
fastest possible X-sync speed (1/250
sec with the EOS 620 and 1/125 sec
with the EOS 650) automatically if set
at a higher value.
2) Cover the main subject with the AF
frame and press the shutter button
halfway.