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.
OV.1 Video Overlay Unit Coming Soon to a Focus Monitor Near You
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.ย
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.ย ย
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.
Multiple
Use multiple displays
High-Bright LED Display
The compact HIGH-BRIGHT LED DISPLAY receives data remotely from the BASE and relays distance information with ultra-bright LED numbers.
Ultrasonic Bug Transmitter
The miniature ULTRASONIC BUG TRANSMITTER is milled from rugged ABS, weighs virtually nothing and can be easily hidden under most fabrics.
System Overview Video
Build Your Cine RT
Add accessories and customize the system to your individual specifications and LCS.
LCS Integration
The Cine RT Systemโs 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 Focusbugโs 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
Welcome to the OV1 Overlay Unit Introductory Guide.
OV1 Presale Orders are now shipping. If you are registered for a Presale Unit, we thank you for your patience and will be contacting you soon.
Those wishing to order an OV1 may do so at focusbug.com or through their local Focusbug reseller. Please note that all new orders placed at this time will ship after Presale Order fulfillment is complete.
Welcome to the OV1 Overlay Unit Introductory Guide.
OV1 Presale Orders are now shipping. If you are registered for a Presale Unit, we thank you for your patience and will be contacting you soon.
Those wishing to order an OV1 may do so at focusbug.com or through their local Focusbug reseller. Please note that all new orders placed at this time will ship after Presale Order fulfillment is complete.
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Lleva tu precisiรณn al siguiente nivel. El ecosistema Cine RT llega a CTT para un laboratorio รบnico. ยฟEstรกs listo?
La inscripciรณn se abre virtualmente el dรญa 22 de Abril de 2026
Manos al lente,
laboratorio abierto,
saber compartido.
#cameraassistmx #cttexp #focusbug_technologies
Lleva tu precisiรณn al siguiente nivel. El ecosistema Cine RT llega a CTT para un laboratorio รบnico. ยฟEstรกs listo?
La inscripciรณn se abre virtualmente el dรญa 22 de Abril de 2026
Manos al lente,
laboratorio abierto,
saber compartido.
#cameraassistmx #cttexp #focusbug_technologies
...
First 35mm shoot courtesy of AFI and racheldeutsch and sydlawsondp
Really good learning experience with a solid crew. Doing a Steadi oner on 2x anamorphics was a fun challenge. Thanks r7s7k for hitting those marks!
Shoutouts to camera team _kylestubbs and b3337321 for helping me keep everything running smooth!
And shoutouts arianahoshino for getting bts where my arms look good
First 35mm shoot courtesy of AFI and racheldeutsch and sydlawsondp
Really good learning experience with a solid crew. Doing a Steadi oner on 2x anamorphics was a fun challenge. Thanks r7s7k for hitting those marks!
Shoutouts to camera team _kylestubbs and b3337321 for helping me keep everything running smooth!
And shoutouts arianahoshino for getting bts where my arms look good
...
Tripode Deluxe
#filmmaking #cinematography #filmmaker #filmcrew #onset
Tripode Deluxe
#filmmaking #cinematography #filmmaker #filmcrew #onset
...
Quick vertical FX3 build for a content spot
Featuring:
sonynz sonycine FX3
zeisscinematography Nano Primes
arriaustralia motors
focusbug_technologies CineRT
teradek
cine_aks cable management
With thanks to gearroomnz
#cameraassistant #focuspuller
Quick vertical FX3 build for a content spot
Featuring:
sonynz sonycine FX3
zeisscinematography Nano Primes
arriaustralia motors
focusbug_technologies CineRT
teradek
cine_aks cable management
With thanks to gearroomnz
#cameraassistant #focuspuller
...
arri smallhd Overlay license in play this week. Hereโs what Iโve learned so farโฆ
Pros๐ช๐ผ
1. Very nice having eyes on monitor
2. Plenty of sizing options, transparency etc
3. Three right side screen positions are good options
Cons๐คทโโ๏ธ
1. USB-C interface powers handset, but also drains battery slowly but โpoweredโ icon takes over the battery level icon so you canโt see the handset draining. Hoping the serial cable option will be the fix.
2. Pulling the USB-C while handset is on with a battery sometimes results in the handset powering down as if it lost power, and in one case it actually FACTORY RESET! Not good on a busy set. Is this the new HI-5 SUP or the overlay license? Not sure yet need to test more.
Once things are smoothed out, Iโd love to see some options added to show focus in a few โgraphicalโ ways like a heads up display. Definitely need the Serial to USB-C cable immediately.
#arrioverlays #arri #smallhd
arri smallhd Overlay license in play this week. Hereโs what Iโve learned so farโฆ
Pros๐ช๐ผ
1. Very nice having eyes on monitor
2. Plenty of sizing options, transparency etc
3. Three right side screen positions are good options
Cons๐คทโโ๏ธ
1. USB-C interface powers handset, but also drains battery slowly but โpoweredโ icon takes over the battery level icon so you canโt see the handset draining. Hoping the serial cable option will be the fix.
2. Pulling the USB-C while handset is on with a battery sometimes results in the handset powering down as if it lost power, and in one case it actually FACTORY RESET! Not good on a busy set. Is this the new HI-5 SUP or the overlay license? Not sure yet need to test more.
Once things are smoothed out, Iโd love to see some options added to show focus in a few โgraphicalโ ways like a heads up display. Definitely need the Serial to USB-C cable immediately.
#arrioverlays #arri #smallhd
...
๐ซ๐ฟ๐๐๐ฟ๐ป๐ด ๐ฟ๐ธ๐๐ฐ๐๐ด๐ซ
We stopped by Cinegrell the other day, got our hands on some new toys, and figured why not go full overkill for once.
So we built it. No compromises. Just a straight-up monster of a rig๐พ๐ฅ
Hereโs the result. Hope you dig it. ๐ฅ๐ฃ
#camerarig #focuspuller #behindthescenes #filmset #cinemacamera
๐ซ๐ฟ๐๐๐ฟ๐ป๐ด ๐ฟ๐ธ๐๐ฐ๐๐ด๐ซ
We stopped by Cinegrell the other day, got our hands on some new toys, and figured why not go full overkill for once.
So we built it. No compromises. Just a straight-up monster of a rig๐พ๐ฅ
Hereโs the result. Hope you dig it. ๐ฅ๐ฃ
#camerarig #focuspuller #behindthescenes #filmset #cinemacamera
...
arri Loving the new overlays. ๐ฅ๐ฅ๐ฅ smallhd
.
.
#arrioverlays #smallhd
arri Loving the new overlays. ๐ฅ๐ฅ๐ฅ smallhd
.
.
#arrioverlays #smallhd
...



