Using actuators to correct focus has been shown as the preferred method in many optical systems including cameras. In XR displays focus adjustment is also required. It can prevent a loss of performance when ambient temperature changes causing distortion of the optical elements and can also enable dynamic adjustment of the virtual image distance. Existing actuators require always-on power consumption and are large and heavy, all of which is undesirable. Here we will present a novel SMA actuator which utilizes the unique characteristics of SMA to provide focus compensation without compromising power consumption in a lightweight and compact form factor.