Canon Speedlite Transmitter ST-E3-RT Manuale

Using Fully Automatic Wireless Flash

With the high-speed sync function, the flash can synchronize with all
shutter speeds. This is convenient when you want to use aperture-
priority AE for fill-flash portraits of a subject.

Display <

P>.

Press function button 4 to display
<

P>.

Display <

c>.

Press function button 2 <

Y> to

display <

c>.

Check that <

F> is lit in the

viewfinder.

c High-speed Sync

When using the transmitter with EOS cameras compatible with E-TTL and
released up to 2011 or EOS REBEL T5/EOS 1200D, high-speed sync is
not possible with radio transmission wireless flash shooting (p.19).

With high-speed sync, the faster the shutter speed, the shorter the
effective flash range will be.

If you set a shutter speed that is equal to or slower than the camera’s
maximum flash sync speed, <

F> will not be displayed in the viewfinder.

To return to normal flash shooting, press function button 2 <

Y> to

turn off <

c>.

High-speed sync is not available during stroboscopic flash.

COP