I chose the Yongnuos to flash unleashed with my clip-on can. I use them with the flashes of Yongnuo, but they are with any other shoe mount with center contact compatible. You can probably also ignite remote flash units through the PC Syncbuchse.
The remote trigger is with any camera that has a standard hotshoe compatible. I use them both with Nikon, Olympus and Sony, where they can be used only with the newer Sony cameras because the ancients had a different hot shoe.
The sync speed of the shutter is supposedly at 1/160 second, but I had only very rarely problems with 1/200 second. What is not possible with these triggers, the lightning is to be driven via TTL. That's no problem for me since I set my strobes manually. Unfortunately, it is thus not possible the SuperSync function with appropriate flash use.
But this is not a criticism of the device, as you can not expect such a function for this price, but you should know before buying.
Of course it is possible to use several receivers and trigger so multiple flashes. The flash output level of the individual flashes, of course must be set on each device.
The Yongnuos, the appropriate cable provided, the possibility to act as a camera remote release. They are operated by two AAA batteries actually hold very long.
Me have the small devices totally convinced. They are, in contrast to other manufacturers from the Far East, neatly processed and perform reliable service. Post through walls and across to tidy away. You do exactly what I want, they work reliably from my flashes. No more, no less.
