I was testing the Canon wireless flash system the other night. The flash lights I have are Nissin Di866 and the Sigma Super DX-500. I didn’t know that they are compatible before hand. I bought the Nissin Di866 was because the Sigma didn’t work with the Canon 5D Mark II at the beginning. I then sent that Sigma back to the service center in Australia, surprisingly they fixed the flash light for me without paying a cent (I bought that 2nd hand, the only thing I paid to have the firmware upgrade was the postage.)
Here are the photos for Purple. Hope you like them.