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Sony BURANO Firmware Version 4.0

BURANO

Sony has announced that the BURANO firmware version 4.0 will include:

✅ Support for X-OCN ST
✅ Support for control in Multi Camera System (MCS) using the MSU and CNA-2
✅ Support for OpenTrackIO

X-OCN ST was introduced with the VENICE, so it is no huge surprise that the BURANO is getting it. There is also X-OCN XT, but that is reserved for the VENICE 2.

X-OCN ST
(Standard)
• Feature Film
• Episodic Television
• Commercials
• Documentary
Best balance between picture quality and file transfer time/storage size, providing best efficiency in post-production
Equivalent quality to Sony RAW, even with 30% smaller file size
Screenshot 2026 07 22 at 9 06 44

X-OCN (eXtended tonal range Original Camera Negative) is Sony’s answer to a compressed RAW format. The FX5 was the first camera below the BURANO to offer X-OCN recording. The BURANO can currently record in X-OCN LT.

X-OCN LT
8632 x 4856 at 23.98/25/29.97 fps
8632 x 4552 at 23.98/24.00/25/29.97 fps
6052 x 3404 at 23.98/25/29.97/50/59.94 fps
5760 x 3240 at 23.98/25/29.97/50/59.94 fps
6052 x 3192 at 23.98/24.00/25/29.97/50/59.94 fps
5760 x 3036 at 23.98/24.00/25/29.97/50/59.94 fps
4096 x 2160 at 23.98/24.00/25/29.97/50/59.94/100/120 fps

Screenshot 2026 09 02 at 19 28 00

The update will be made available from May 2027 or later.

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