Thanks all.
PS: as some people asked me for more info about the remotes here's a pic of the set-up. The wiring details are available on Alex C.
blog. You can also get an AC adaptor from SONY or eBay to run the NEX-5 off the main and a 32GB card should give you 16h worth of imaging. Bit over 6000 subs. So plug n' forget type of thing.