Does anybody know if the YN-560 II flash can be triggered (in manual mode) by the Canon St-E2 infrared receiver (or even the infrared system on the 580 II if it was master on camera and you wanted to trigger the YN-560 as slave)?
Or does the YN-560 II only work as an optical slave?
I have an ST-E2 and 430EX II and want to use the 2 flashes together fired by the ST-E2. Again, not using ETTL just manual mode.
The ST/580 won't trigger it via infra, but you can use the 560II in manual mode+optical slave, so as you tigger the 430 with your ST, the YN560 will flash too.
Other option is to get the newer YN560EX (I put a short review here) who supports ETTL via infra red, therefor your ST will control it.
The YN560EX costs about 90$ but I think it worth the extra 20$ (over the YN560II)