The Godox MF-R76N TTL Macro Ring Flash is compatible with the Nikon Z7 II, as it was developed for Nikon cameras and also works with the Z7ii. However, there is no specific information on whether it is specifically optimised for the Z7 II in TTL mode. In general, however, it should work in TTL mode as Nikon has maintained the i-TTL protocols across different models.