Josh_30 wrote in post #13124448
There is probably still a preflash, its just super-quick before the actual flash. I found a source that says the 7D in manual mode may actually disable the preflash, so you might want to try this.
Edit: you can test for a preflash by setting a long shutter speed, say ½ second, and using 2nd curtain sync. If you see two flashes, the first is a preflash. If you only see one flash, the preflash has been disabled. Use this to troubleshoot and see if any modes will really disable the preflash.
When I enable the wireless in 60D, it is disabling the second curtain option.
I just tried 2 sec shutter speed to see if the flash fires late, but couldn't see any light in the picture. Every time I click the shutter I see the flash fires though.
dedsen wrote in post #13124511
You have to turn the wireless control OFF in the camera and if you leave the popup in eTTL you set the 560 to S2. If you set the popup to manual you can use S1 on the 560.
Dedsen, this solved my problem. I turned the wireless off, set the popup to ETTL and 560 to S2, also set flash exposure compensation to -3 stops to minimize popup's effect, everything works fine now.
I will use 560's with the umbrellas and waiting for the radio triggers, but it is still good to use them with built in flash.
Thanks to everybody contributed to this thread.