Because no one wants to hear the words, “Cut. That was great. Let’s do the same thing, but this time in focus.”
 
Wirelessly control your lens focus, iris, or zoom with this RT FIZ Wireless Lens Control Kit from Teradek. 
 
Teradek CTRL.3 Three-Axis Wireless Lens Controller
 
For precise lens control with your Teradek RT motors and receivers, the Teradek CTRL.3 Three-Axis Wireless Lens Controller can control focus, iris, or zoom with ease. The CTRL.3 has an outdoor wireless range of 5000' and an indoor wireless range of 500'. You can also use the included 5-pin monitor interface cable to connect directly to a monitor.
 
The large focus knob, flexible mounting options, OLED display for configuration and lens data, and its lightweight design make the CTRL.3 accessible and easy to use. It's powered by a single LP-E6 battery which provides approximately 36 hours of usage time. Features include a lens mapping firmware update to utilize the included pre-marked focus or iris rings for quick autocalibration when switching lenses during a shoot. 
 
Teradek RT MK3.1 Brushless Lens Motor
 
Teradek's RT MK3.1 Brushless Lens Motor is designed to remotely control your lens focus, iris, or zoom, or other function. The MK3.1 motor operates smoothly and quietly, even during slow, high-torque moves. This brushless motor features electronic backlash-compensation, a high-resolution encoder, and an integrated heat sink. For optimal flexibility, a gear can be attached to either side of the MK3.1 Motor, expanding position choice to either side of the lens, depending on your camera configuration.
 
Teradek MDR.S Compact 3-Channel Lens Control Receiver with Bluetooth
 
With 3-channel lens control in an ultracompact form factor, the MDR.S Compact 3-Channel Lens Control Receiver with Bluetooth from Teradek allows you to control compatible RT motors for wireless focus, iris, and zoom functionality. The MDR.S has FHSS wireless technology that prevents interference and a 5000' line of sight range. A 6-pin port on the receiver allows you to trigger run/stop on the camera from your connected hand unit.