Rent Arri Ultrasonic Distance Measure UDM-1 in New York City.
On-Set Distance Measurement
The Ultrasonic Distance Measure UDM-1 measures the distance between film/sensor plane and objects by sending ultrasonic pulses and measuring the time they take to bounce back. It is compatible with any camera system.
The measuring range can be setup through the display unit that is part of the basic package. This allows exclusion of objects that are irrelevant for the focus pull and would deliver confusing values to the camera assistant.
The UDM-1 comes with a sensor module and a display unit that indicates the measured values on a transflective screen. When used with ALEXA Plus or Studio cameras or the Universal Motor Controller UMC-4, the measured distance will be instantly displayed on the WCU-4 hand unit. The UDM-1 also enables ALEXA Plus or Studio cameras and the Universal Motor Controller UMC-4 to do focus tracking – setting the focus motor to continuously follow measured distance of a subject in the frame.