The DJI Focus uses DJI’s expertise in brushless motors for previously unheard of levels of precision and accuracy. The brushless motor puts just aprox. 0.02 degrees of accuracy in your hands so that turning the remote is just like turning the lens itself. It also features high torque and a fast reaction speed so you can keep your subject in focus no matter how it moves. On the ground, the remote control transmits at distances of up to 100m with just 14ms of lag in open space. While cinema lenses feature built-in hard stops, photography lenses do not. On the Focus you can tune the lens to match the end-points of any lens you want to use. Because it uses a brushless motor, the onboard processor knows exactly which position the motor is in, letting you set up in seconds simply by turning the lens to infinite and marking it, then repeating at the other end. The already tactile and sturdy focus wheel is customizable so that it feels how you want it to feel. Simply turn a control knob until it reaches a stiffness or looseness that feels right to your hand. A white marking ring around the focus dial can be swapped out and customized instantly using everything from masking tape to wax pencil for different lenses or projects. A light behind the ring illuminates it from behind ensuring markings are visible even on a dark set. An OLED display menu on the remote lets you fine-tune how the Focus works for you. You can even set multiple focus points, and the speed the camera racks between them making complex moves simple and repeatable.
brand: RT Motion
RTMotion LCS is handmade in UK, a sturdy and very reliable wireless follow focus. It can work with up to 3 motors (Iris, Focus and Zoom) and also can trigger the camera through the reciever where are connected the motors.