The toggles there correlate to manual settings like light, aperture, shutter speed, and ISO. Adjust them and the camera, and an animated "photograph" of a helicopter, change in real time.

Ever wondered what a DSLR camera looks like when it's taking a photo? If you have, you probably haven't been able to see it with your naked eye, because the mirror and shutter move far too quickly ...

TriggerTrap Mobile uses the iPhone’s camera to fire the DSLR’s shutter when it detects movement. The app’s reliance on the iOS device’s sensors is also a weakness: it’s battery intensive.