Accsoon CineView Master 4K Lite Announced – DCI 4K60 Wireless Transmission, Camera Control, and USB-C Output on Both TX and RX

Wireless Video News

by Nino LeitnerApril 13^th, 2026

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Accsoon has announced the CineView Master 4K Lite, a dual-band wireless video transmission system that delivers end-to-end DCI 4K60 over its proprietary RTMS 4.0 protocol, with sub-35ms latency at 1080p, a 350m / 1,200ft range, wireless camera control for select Sony and Canon bodies, USB-C video output on both transmitter and receiver, and Frame.io Camera to Cloud integration. Priced at $729, it slots below the tri-band CineView Master 4K while adding several practical features that its pricier sibling launched without.

The CineView Master 4K Lite arrives at an interesting moment for Accsoon. The company has been steadily expanding its CineView ecosystem over the past two years, from the affordable CineView HE and CineView Nano to the recently launched CineView SE 4K and CineView M7 Pro monitor. The Master 4K Lite positions itself as a mid-range workhorse: it trades the original Master 4K’s tri-band 6GHz capability and 2.5km range for a lower price and a few new tricks that many crews will appreciate more than sheer distance.

Dual-band transmission with RTMS 4.0

The system is built around Accsoon’s proprietary RTMS 4.0 protocol, operating on both 2.4GHz and 5GHz frequencies with DFS support for navigating congested RF environments. According to Accsoon, the dual-band approach dynamically adjusts audio and video data across bands for improved stability, faster connection times, and the ability to handle multiple simultaneous connections.

Rated transmission range is 350m / 1,200ft line-of-sight, and the system supports up to 10 groups of transmitters and receivers operating within close proximity. For multi-camera shoots or productions with multiple crews sharing a location, that coexistence figure is a meaningful consideration. H.265 encoding is supported alongside H.264, giving users the choice between higher image quality or reduced bandwidth consumption at equivalent bitrates.

A closer look at latency

The headline latency figure Accsoon quotes is sub-35ms, but the product specification sheet adds important context. That sub-35ms number applies to 1080p60 transmission; at DCI 4K60, latency rises to under 65ms. Both figures exclude camera-internal processing delay. For context, the original CineView Master 4K achieved roughly 25ms at 1080p in our review, so the Lite’s figures are in a similar ballpark. Whether that 65ms 4K figure proves workable for focus pulling will depend on the specific workflow, but for director’s monitors and client viewing it should be perfectly adequate.

USB-C video output on both TX and RX

One of the more notable updates is USB-C video output on both the transmitter and receiver. On the original Master 4K, USB-C video out was limited to the TX unit. Having it on both ends means a director or DIT can plug a phone or tablet directly into the receiver for wired, zero-additional-latency monitoring, while someone on the camera side can do the same via the transmitter. Connected mobile devices also receive power through the USB-C connection, eliminating the need to keep a separate charger nearby.

Wireless camera control

The CineView Master 4K Lite supports wireless camera control via USB-C, allowing the transmitter to connect directly to supported cameras with a single cable. From a connected monitor or the Accsoon SEE app, users can adjust ISO, aperture, shutter speed, and white balance remotely. The system also supports bi-directional record triggering and touch autofocus, turning the monitoring side of the workflow into an active control hub.

Currently supported cameras include the Sony FX3, FX30, FX6, A7C II, A7S III, A7 IV, and A9 III, as well as the Canon R5, R6, R5 II, R6 II, R7, and R8. Accsoon says support for additional models from Sony, Canon, and other manufacturers is planned. It is worth noting that camera control is available via Wi-Fi connection to the transmitter only, not through the receiver’s USB connection.

Monitoring and the Accsoon SEE app

The CineView Master 4K Lite supports monitoring on up to five devices simultaneously: one wired and four wireless connections. Both the receiver’s direct output and wireless monitoring via the Accsoon SEE app support up to 4K60 resolution.

The SEE app, which we praised in our CineView Master 4K review, features a vertically oriented interface optimized for mobile use and supports streaming and recording with LUTs applied, video rotation for vertical content, and calibration LUTs. Frame.io Camera to Cloud integration is also supported, enabling real-time uploads from nearly any camera to the cloud through the system.

CineView ecosystem compatibility

The Master 4K Lite is designed to work within Accsoon’s broader CineView ecosystem. Compatible devices include the CineView M7 and M7H Pro operating in TX or RX mode, as well as CineView Master 4K and CineView SE 4K transmitters and receivers. This cross-compatibility allows mixed system setups, so existing Accsoon users can integrate the Lite into their current gear without replacing everything.

Build and connectivity

The transmitter accepts both HDMI 2.0 and 3G SDI input, with an HDMI loop-out for local monitoring. The receiver provides HDMI 2.0 and 3G SDI output. Antennas are swappable, and both units feature active cooling via built-in fans. Power options include NP-F550/F750/F970 batteries, DC input (7.4 to 16.8V), and V-Mount compatibility via an optional adapter. Average power consumption sits at 4.6W per unit. Dimensions come in at 130 x 95 x 32mm / 5.12 x 3.74 x 1.26in (antennas excluded), with the transmitter weighing 322g and the receiver 320g.

How it compares to the original Master 4K

The naming is clear: this is the “Lite” version of the CineView Master 4K, and the trade-offs reflect that. You lose the third 6GHz band, which reduces maximum range from 2.5km to 350m and adds roughly 10ms to 1080p latency. In return, you gain USB-C video output on both TX and RX (the original only had it on the TX), built-in wireless camera control, H.265 support out of the box (the original received this via a firmware update at IBC 2025), and a $120 saving. For productions that rarely need transmission beyond a few hundred meters, the Lite may actually be the more practical choice.

Price and availability

The Accsoon CineView Master 4K Lite is available now, priced at $729 for the TX and RX kit. More information is available on the Accsoon website.

At $729, the CineView Master 4K Lite looks like a compelling option for crews who want 4K60 wireless transmission, camera control, and flexible monitoring without stepping up to a tri-band system. Does the 350m range cover your typical shooting scenarios, or do you find yourself needing the longer reach of the original Master 4K? Don’t hesitate to let us know in the comments below!