August 10, 2026

AtomOS 12.7.3 Firmware Release Notes for Sumo PRO-19 and Shogun AV-19

Installation Instructions

Detailed instructions on how to install the latest firmware on your device can be found on the firmware download page for your product: www.atomos.com/product-support/?parent=sumo (Sumo PRO-19) and www.atomos.com/product-support/?parent=shogun (Shogun AV-19)

Improvements for Sumo PRO-19 and Shogun AV-19:

• Added support for Sony FX5 including Raw video handling and Camera Control
• New 'FLog2-C Eterna' gamma option with a dedicated EL Zone False Colour table calibrated specifically for Eterna cameras
• Improve EL Zone performance
• Added FLog2-C/FGamutC as loop-out options for Fujifilm RAW
• Added SLog3 Full Range log profile
• Improved Log handling for HLG, FLog, FLog2, and FLog2-C
• Improved Camera-to-Cloud for interlaced footage
• Added support for recording interlaced as H.265 in 8-bit 4:2:0
• Enabled Frame grab support for interlaced and 720p video

See www.atomos.com/sumo-pro-certified/ (Sumo PRO-19) and www.atomos.com/shogun-av-certified/ (Shogun AV-19) for supported storage & accessories.