The ARRI UDM-1 (Ultrasonic Distance Measure) is an ultrasonic distance measurement device. It measures the distance between the sensor plane and a subject and displays this measurement on a transflective display unit.
The ARRI UDM-1 (Ultrasonic Distance Measure) is an ultrasonic distance measurement device. It measures the distance between the sensor plane and a subject and displays this measurement on a transflective display unit.