Canon 600EXII-RT Instruction Manual page 62

' Radio Transmission Wireless Flash Photography
2. High-speed sync shooting is not possible.
3. Group flash
4. Modeling flash from the slave unit
release from the slave unit
5. The camera cannot be used as part of a "slave camera unit"
during linked shooting
The camera can only be used as part of a "master camera unit".
62
is not possible.
(p.79)
(p.84)
as well as remote
(p.82)
are not possible.
(p.83)
.