The Cine RT System
The Cine RT System is one of the most popular distance reference tools available to professional focus pullers, and the best ultrasonic cinema rangefinder & transmitter tracking system in its class.
Designed by camera assistants
Widely recognized for its operational flexibility and exceptional performance, the Cine RT satisfies a broad range of working methods on film and digital cameras.
Purpose built components
Our components are constructed from pro-grade materials and electronics rated to work within industrial operating temperature range – built to withstand a life on set.
Expansive toolset
The innovative distribution of ultrasonic transducers across the custom-built wireless component family enables an expansive toolset unique to the Cine RT.
LCS Integrations
Custom-designed and third-party serial protocol outputs deliver fast distance data to lens control systems by ARRI, Preston, c motion, Teradek, and Heden.
The System Package
The component family enables multiple working modes to display real-time subject measurements and facilitate the collection of focus marks.Â
1
Ultrasonic Base Sensor
The lightweight, low-profile ULTRASONIC BASE SENSOR is the computational center of the Cine RT System and the only system component required on the camera, making it ideal for all camera builds.
2
Handset Control Unit
The HANDSET CONTROL UNIT is both a remote command centre and a handheld tape measure. It contains a pressure-sensitive touchscreen to access system-wide operational settings and display multiple distance readout modes.
3
OV1 Video Overlay Unit
The Focusbug OV1 is a compact inline video processing unit that inserts between the cameraâs SDI feed and the focus monitor, outputting real-time Cine RT and LCS data via a real-time customizable overlay.
4
High-Bright LED Displayâ
The compact HIGH-BRIGHT LED DISPLAY receives data remotely from the BASE and relays distance information with ultra-bright LED numbers.
5
Ultrasonic Bug Transmitter
The miniature ULTRASONIC BUG TRANSMITTER is milled from rugged ABS, weighs virtually nothing and can be easily hidden under most fabrics.
Start Building Your Cine RT
Explore the system overview and configure your system. Add accessories and customize the system to your individual specifications and LCS.
LCS Integration
The Cine RT Systemâs utility goes even further by connecting to all popular lens control systems. Custom or native serial protocols deliver fast distance data to products by ARRI, c motion, Preston, Teradek and Heden. In 2022 Focusbugâs partnership with ARRI advanced the integration to include the Focusbug License for bi-directional operational compatibility with the Hi-5 focus handset.
The Focusbug Community
The Focusbug Cine RT System was introduced in 2017 and, with over 1800 units in the field, has become an industry standard. The system has been used on a wide range of productions, from music videos and documentaries to large-scale award-winning films like Dune, Napoleon and Oppenheimer.
We thank our user base for their support and ongoing dialogue, which inspires us to continue to evolve the Cine RT to further complement the toolkit of any 1st AC. We are proud of our users and love to feature their posts and stories.
Tag or mention us on Instagram and join the Focusbug community!



Focusbug Socials
If you have any questions, send me a DM! ðĨ
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#filmmakaz #focuspulleratwork #arricamera #focusbug #hi5arri
If you have any questions, send me a DM! ðĨ
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#filmmakaz #focuspulleratwork #arricamera #focusbug #hi5arri
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Andrex Commercial featuring Katherine Ryan
Two venice builds and a Scubacam scene all prepped and built in focuscanning
Smashing team and a fantastic studio day!
#focuspuller #1stac #looptalent #crewdiary
Andrex Commercial featuring Katherine Ryan
Two venice builds and a Scubacam scene all prepped and built in focuscanning
Smashing team and a fantastic studio day!
#focuspuller #1stac #looptalent #crewdiary
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Our first system update for the OV1 Overlay Unit is here!
Thank you to the OV1 early adopters for quickly bringing forward a collection of overlooked UI quirks and ideas for useful features. Fixs and refinements have been implemented and outlined on the OV1 page at focusbug.com.
For a small team like us, your feedback is everything. It literally drives our development. This first update demonstrates exactly how we intend to keep building the Cine RT System, OV1 and future Focusbug products: in direct collaboration with you.
Please note: Version 26 firmware has been released for OV1 presale clients to get overlays up and running. Although V26âs official release is pending, it is available to all interested Cine RT System users and contains some new features such as FLEA Data Interface Module support, Preston Autofocus Trigger (via the Cine RT Handset) and a range of behind the scenes system optimizations.
Our first system update for the OV1 Overlay Unit is here!
Thank you to the OV1 early adopters for quickly bringing forward a collection of overlooked UI quirks and ideas for useful features. Fixs and refinements have been implemented and outlined on the OV1 page at focusbug.com.
For a small team like us, your feedback is everything. It literally drives our development. This first update demonstrates exactly how we intend to keep building the Cine RT System, OV1 and future Focusbug products: in direct collaboration with you.
Please note: Version 26 firmware has been released for OV1 presale clients to get overlays up and running. Although V26âs official release is pending, it is available to all interested Cine RT System users and contains some new features such as FLEA Data Interface Module support, Preston Autofocus Trigger (via the Cine RT Handset) and a range of behind the scenes system optimizations.
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K35 & Dream Lens Setup for commercial shoot ...
#ria1 on #djironin #arri #alexa35 and #masterprimes ...
35mm and golden hour
#moviecamera #35mm #arriflex #filmcamera #firstac
35mm and golden hour
#moviecamera #35mm #arriflex #filmcamera #firstac
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Work in focus ðĨ ...
Another season complete! 41 shooting days in the can with an amazing crew and cast. ðð
From the cold spring through the wind and rain right into scorching hot summer days with temperatures nearing 40âĒC.
There was sweat, blood and tears on some days but overwhelmingly we were blessed by good mood lots of laughter and a strong team spirit.
Thank you all for the good times! Especially the grips who looked after my safety when in the rig and were crucial in navigating steadicam shots.
Looking forward to the next season together in August!!
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#steadicam #steadicamoperator #cameradepartment
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betz_tools flowcine smartsystemgear arri smallhd teradek
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Rental: cine__mobil Berlin.
Another season complete! 41 shooting days in the can with an amazing crew and cast. ðð
From the cold spring through the wind and rain right into scorching hot summer days with temperatures nearing 40âĒC.
There was sweat, blood and tears on some days but overwhelmingly we were blessed by good mood lots of laughter and a strong team spirit.
Thank you all for the good times! Especially the grips who looked after my safety when in the rig and were crucial in navigating steadicam shots.
Looking forward to the next season together in August!!
.
#steadicam #steadicamoperator #cameradepartment
.
betz_tools flowcine smartsystemgear arri smallhd teradek
.
Rental: cine__mobil Berlin.
...



