Yes, it supports 4K HDMI input and output at up to 30Hz, allowing you to monitor high-resolution signals and loop them to other devices.
Yes, the Godox GM55 allows you to upload up to 25 custom 3D LUTs via an SD card for real-time color grading preview.
It is powered by standard Sony NP-F series batteries (like NP-F550/750/970) or via a DC power adapter (7-24V).
Rental units typically include standard HDMI cables; specific camera control cables for Sony or Canon may need to be requested separately.