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Electronic Control System: New Lens Data Options

ARRI, IBC 2014, Amsterdam: ARRI is unveiling its new Lens Data Encoder LDE-1 and announcing a software update for its Wireless Compact Unit WCU-4, both of which expand the versatile lens data options available via the company’s Electronic Control System.

ARRI’s Electronic Control System is a sophisticated toolset for precise wireless remote control of cameras and lenses from any manufacturer; it also provides valuable metadata about exactly what a lens is doing at any given moment. All tools within the modular, future-proof system can be freely combined to provide powerful, scalable solutions for any application. Ergonomic, feature-rich hand units ease the work of the focus puller, while compact, intelligent motor controllers optimize camera setups.


The Wireless Compact Unit WCU-4 is a lightweight, ergonomic hand unit offering up to 3-axis lens control. Rugged and splash-proof, it features an easy-to-read lens data display, vibrating alerts that allow focus pullers to keep their eyes on the action and ALEXA remote control functionality. The large lens data display reflects ambient light and remains clearly visible even in direct sunlight, while the backlit focus knob and control buttons allow the WCU-4 to also be used in darkness.

Software Update Packet (SUP) 2.0 for the WCU-4 makes lens programming easier than ever before. Through lens programming, lens tables can be generated for any lens, from vintage anamorphics to modern PL mount zooms, allowing lens data to be collected from them via the Electronic Control System. Lens scales can now be programmed in less than a minute, using the large LCD screen of the WCU-4, with no additional equipment besides the Universal Motor Controller UMC-4 (or an ALEXA Plus or Studio camera) and lens motors. The resulting lens file is stored on an SD card, which can be taken out and reused elsewhere.

Additional features of WCU-4 SUP 2.0 include minor bug fixes and improvements made in direct response to customer feedback. Software updates such as this one permit the Electronic Control System to evolve and adapt, making it future-proof and a sound long-term investment.


The new Lens Data Encoder LDE-1 extends the functionality of the Electronic Control System. Incorporating an encoder that delivers data indicating the position of the lens ring to which it is attached, the LDE-1 can be used in parallel with a manual follow focus unit or a third-party wireless lens control system. It allows lens data to be generated in situations when an ALEXA Plus or Studio (or a UMC-4) is being used without an ARRI lens motor or an LDS lens.

About ARRI:

With headquarters located in Munich, Germany, Arnold and Richter Cine Technik (A&R) was founded in 1917 and is the world’s largest manufacturer and distributor of motion picture camera, digital intermediate (DI) and lighting equipment. The ARRI Group comprises a global network of subsidiaries and partners that covers every facet of the film industry, including worldwide camera, grip and lighting equipment rental through ARRI Rental; turnkey lighting solutions through the ARRI System Group; lab services, postproduction and visual effects through ARRI Film & TV; and film distribution through ARRI Worldsales. Manufactured products include the ALEXA camera system and AMIRA documentary-style camera; Master Anamorphic lenses; L-Series LED and M-Series HMI lights; Pro Camera Accessories; and ARRISCAN archive technologies. The Academy of Motion Picture Arts and Sciences has recognized ARRI’s engineers and their technical contributions with 18 Scientific and Engineering Awards.

For locations and more information please visit www.arri.com

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