VisionLock is a servo signal processor offering smooth and fully proportional rotation for aerial photography camera mounts. VisionLock operates in two modes. In stand alone mode VisionLock converts the proportional position signal from the transmitter to a proportional rotation speed of the camera mount. The bigger the joystick input the faster the camera mount will rotate. In gyro mode VisionLock can be used together with heading hold gyros to provide proportional rotation speed but also the ability to maintain the camera heading if the aircrafts changes attitude. Both modes offer endpoint and control gain adjustment suitable for a wide range of gear ratios.