Remote LiveView Control
Which camera system are you using ? If it's Canon, then you can use a wired Android tablet (requires a USB host port on the tablet) and a remote control app. called "DSLR Controller" ( http://dslrcontroller.com/ ).
I've used this with a 10" Asus Transformer TF101 tablet and my Canon 50D.
Check out my galleries (lots of macros) at :
|In the Big Girl Chair by BryanKing|
from Baby Photography
|Ruby Red Dress by cjf2|
from High key portrait with RED
|Follow me home by eaa|
from Shades of Blue in Nature