After a lot of head scratching, I think I'm beginning to understand the Nex 6 flash "system". (1) The Nex 6 has a "multi interface shoe", which means you can put any normal flash on it but (a) some flashes have a voltage that can harm the camera and (b) TTL will not work. (2) There are exactly two (2) native external flashes that will work with the Nex 6 in TTL mode: the $550 Sony HVL-F60M and the upcoming $400 Sony HVL-F43M. (These are called M flashes) Both are probably too big for the Nex 6. (3) You can use just about any flash with a Sony Maxxum shoe in TTL mode, with the use of the Sony ADP-MAA adapter ($24). Most of these flashes are quite big (and the adapter makes them even higher), but a couple are small enough. (These are called AM flashes) (4) Note that the Sony Sony HVL-F20M, which Sony advertises as being for the Nex 6, is really a Sony HVL-F20AM plus a Sony ADP-MAA adapter. Ironically, it is cheaper to buy the HVL-F20M right now. (5) It should be possible to use a remote triggering device like a Pocketwizard in the Nex 6 shoe, but it will operate only in manual mode (no TTL). (6) I am not aware of any remote triggering mechanism that will support TTL. IF THERE IS PLEASE LET ME KNOW! (7) The Nex 6 internal flash does not support wireless mode. THIS IS VERY UNFORTUNATE. (8) I suppose that you can do remote TTL by buying at least two Sony flashes (I guess you can use any M or, with an adapter, AM flash? Is that right? How about third party flashes with a Sony/Maxxum shoe??). (9) Is there any cable that will allow a Sony flash to be connected to the Nex, that will operate in TTL mode?? THIS IS A BIG QUESTION FOR ME RIGHT NOW.