Reasoning
Across sources, the most explicit and consistently supported description of the Avata 2's camera system axis is 'single-axis camera gimbal' (TechGearLab, highest confidence). Other sources describe the onboard camera/specs (1/1.3-inch sensor, 4K, 12 MP) but do not conflict with the axis claim and do not provide a stronger opposing axis specification, making single-axis stabilization the most representative canonical term.