Well, now I know why the NX300 was such a great price: it's missing box flash and battery. And registration papers, and manual.. and Lightroom 4 come to think of it! That was pretty much stated on the listing but I failed to do my due diligence. In this case I'm OK as a battery (my 'spare') arrives tomorrow and I can contemplate the flash options for a bit. I've ordered a spare spare battery now. I will contact them about how to register and get a copy of LR4 software, and on to Samsung after that.
Well OK, it's pretty bad but the phone in fact can take an image of the two cameras together. I warned you!