i came up with this method while trying to find a remote shutter app for my motorola defy to be used to control a nikon d50, but it can be used with other cameras, as long as you have the right software. this does require the camera be connected to a computer, so it isn't really wireless, but it does give you control over the camera settings. first off, you will need an android app that gives you the ability to remotely control a computer, of which there are several (i tried and like PC Remote Controller, priced at $4.99, but there may well be better apps than this). install the app to the phone, install the server software to the computer, and install a camera control utility to your pc (i did this using Nikon's Camera Control 2, but any similar program suited to your camera should operate just fine). after installation and hardware setup (basically, plug the camera in to the computer) start the remote app on both the phone and the computer and establish a connection. from there start the camera control utility either using the phone or just walk to the computer. since the phone can now control the computer, and the computer can control the camera, you essentially have your remote with the ability to alter camera setting. since i am using a D50, i do not know for certain that you could also get a live preview via the phone, but i believe that you should be able to. if anyone is interested, i will answer that question in a couple of days when my new Nikon D5000 arrives. Not a perfect setup, but still it should do the trick.