I am using this on an iPad3, 32GB, with IOS6.01. Shoots as least as well as the native video taking system, but does offer more control over exposure and focus, frame rates and bit rates.
The odd quirk is in using the "single dual function" reticle. When you just open the app, the focus and exposure can be set and locked as expected, but if you try to change either point and reset them, the focus will hunt, and the exposure goes over quite badly. To work around this problem, you either close and reopen the app, or open the setting controls, and just simply return to the shooting mode without making a single change. Otherwise the choices of dual or "no" reticle do not show this behavior. As I shoot with all of my other real cameras in "center spot" mode, I prefer to lock my focus and then lock the exposure after moving the spot to the area I wish to expose for, having the "single yet dual function" reticle with this odd hang up, really does greatly slow down getting things set up for shooting, as well as messing the video quality up if you dont get things the way you want in the initial effort. Hope you all understand what I am saying.
GunShyCCTV about FiLMiC Classic