NA stronie Canona w specyfikacji
http://cpn.canon-europe.com/content/...te_270EX_II.do
Jest napisane
WIRELESS FLASH
Transmitter No
Slave Yes
No of Groups Fixed group A
No of Channels Triggered by all channels
Remote Shutter Release Yes
Może być jako slave na stałe w grupie A.
It can be controlled and triggered by any of the master flash units in the Speedlite range. This includes the Speedlite 580EX II, ST-E2, MR-14EX, MT-24EX and EOS 7D, EOS 60D and EOS 600D. When used in Slave flash mode, the 270EX II will be triggered by all transmission channels (1-4) and will always be a group A flash.