selective focus for diamond

[da robat]

hi guys...

would it be possbile to make a selective focus for the camera on the diamond?
cos that would be pretty awesome and fun too...

[Kamill]

I read sometime ago that it would be hard to port it from the Touch HD, because it's for WVGA. But maybe it would be a good idea to request it with a bounty? :) Imo such focus is a great thing.