If you mean the radio TTL flex, make sure you get the sock or the shield with it. Personally, I'd be looking for a 30 day money back guarantee with it wherever I got it from. LPA do this, but only in the USA.
Up to date Précis here:
http://www.robgalbraith.com/bins/multi_page.asp?cid=7-10050-10598
For this to work, I believe you still need a choke and the flex receiver has to be above the flash, which makes it a lot less easier as well.
ah ok
so is it that they don't work at all or just with the 580 exii or just with the 580 exii when they are connected directly to hotshoe and not via a cable?

Ask AliB about the Flex with Canon speedlites![]()






I'm using a 580, and have no problems with interference.
of course i wouldn't need this if you could source some triggers that worked with ETTL
(those are smileys in case anyone thinks I'm having a dig at FITP)
There's a lot of new stuff in the pipeline, including (so I believe) some ttl triggers from YongNuo![]()
I assisted at a wedding, whose photographer was given one of the first ce set in this country to test.
Unfortunately, they weren't very reliable. Within 5metres or so, they would misfire maybe 30%, beyond 10metres maybe half and half at best, and when they fired, they would occasionally grossly overexpose for no reason.
Firmware may have helped, and they may be much better now. But I've read way too much about their problems to ever consider them.
Roll on the mark 2 2.4ghz versions (we hope).
I dont like being a £400 beta tester for LPA.
If you mean the radio TTL flex, make sure you get the sock or the shield with it. Personally, I'd be looking for a 30 day money back guarantee with it wherever I got it from. LPA do this, but only in the USA.
Up to date Précis here:
http://www.robgalbraith.com/bins/multi_page.asp?cid=7-10050-10598
If Yongnuo ever crack the Canon IR ETTL signals and send them over radio waves.....
Swoon.....