The other half of the problem is what to gain from a root shell. You can't influence the stages of the image processing without a PhD in Sony DSP Reverse Engineering, and so what remains is probably hooking into the camera controls and injecting key events to re-invent time-lapse timers or bulb exposures, and removing the 30min video recording limit.
This is where the NX mod project arrived - additional hooks into the camera controls and a few changes to internal registers left over by Samsung engineers for debugging, like silent shutter or the 30min limit.
This is where the NX mod project arrived - additional hooks into the camera controls and a few changes to internal registers left over by Samsung engineers for debugging, like silent shutter or the 30min limit.