Originally posted by slipchuck I have been pondering the same setup. I am thinking triggering the one flash wireless from the camera, then having an optical slave on the other flash. wireless doesn't have to be pttl? It would work with a manual flash setup I assume if possible
good luck
randy
One can probably trigger 6 flashes off the optical commander of the camera's onboard flash. But the problem is distance. I think the longest i've been able to use optical wireless is about 10 or 12feet. Also the optical sensor on the flash can't be covered up or pointing in the wrong direction if you're at its limits. My Metz 48 has the window on the right side, one old Pentax flash has it on the front, etc. If you want
to hide flash bodies around a house, out of sight of the camera, optical control becomes difficult.
See Class A's report on the new Gadget Infinity V5 RF units which can be switched to act as RX or TX. They are good up to 100 meters or 300 feet. I just got 4 of them today (2 duos equal 4 units). I set 3 of them up with a flash each with one acting as a transmitter on the camera. No misfires at all in my tests from 2" from the transmitter to 18 feet (the limit of my room) All work on 2 triple A batteries. wonderful design and pretty cheap. see my post on Class A's thread, but he has much more detail in his initial report.
Sure you can use optical wireless for portraits, but if you want to do much larger areas much farther away or hidden out of sight, the RF is the way to do that IMO. As slipchuck mentioned above, one wireless set can be used to achieve some distance away from the camera, that wireless set can then be used to optically trigger a second flash nearby to the RF unit. Gadget Infinity can't be used for PTTL on any camera, so its all manual.
Fun stuff.