Citation Envoyé par Jumbo9241
Il ne me semble pas, car les flash Canon sont commandés par IR uniquement et le Sigma gère les flashs esclaves avec des préflashs codés.
Je pense que le 500 DG Super peut controler un flash 430 EX, le systeme canon wireless marche en lumiere visible et invisible (IR).

source : http://photonotes.org/articles/eos-f....html#wireless


How wireless E-TTL works.
Canon’s wireless E-TTL system employs brief digitally-encoded pulses of light (either visible or infrared, depending on the master unit used) to transmit commands from a master flash unit to a slave unit or multiple slaves. Since the system relies on special digital messages built into the light pulses it’s immune to the problem that regular optical slave flash units have - that of being triggered accidentally in response to other flash units firing. (unless you’re near other photographers who are also using Canon wireless flash units, of course) ...