As far as I know, with the lack of a traditional hotshoe there's not much you can do. I know there's adpaters on the market, but they are not "hot" per se. You can always use the on-camera flash to trigger an external flash...but that's likely not what you wanted to hear.
ok so i got a bunch of stuff in the mail today still waiting on a few things my pentax k 100-200mm lens my manfrotto tripod head, and i'm looking into a 1.2 or a 1.4 as i type...
I'm going to also try to do some video with the NEX see how that works out for me. Oh yea lso looking into a ZOOM H4
“A question that sometimes drives me hazy: am I or are the others crazy?”
using the camera to shoot from the waist gives me a great perspective, one where i had to go down on a knee when shooting with my canon so i can put my eyeball to the VF. yeah...i've sold my DSLR to my bro-in-law. i think the only thing i'll miss is the mic in and my awesome external flash that i never mastered anyway. i hope somebody starts making radio poppers so i can still use my flash off camera.
next purchase will be a wireless remote and an intervalometer and of course, whatever MF primes i can find for a steal.
this little camera has got me so excited again and refueled the fires.