I am now going to research about taking photo in game. By using untiy, is it able to create a camera control interface?
if you write obj-c code that does it yes.
Or if you invest into Bliprob enhancement kit which contains this as well many other features (including movie playback in iphone basic)
There’s plenty of tutorials on how to do it in xcode, and you can now access all those goodies pretty easily through Unity (advanced)