Read about this in a magazine, figured it could make some photographer happy.
Its an app for Sony Nex cameras, only found this one vid on youtube:
http://www.youtube.com/watch?v=GXGuo3NUwWU
And heres a little picture:
http://t3.gstatic.com/images?q=tbn:A...hx8-3dtNIg5rmg
Official site here
Dont ask me anything about it, I dont even own a camera but I hope someone finds use for it.