1. An apparatus comprising: a camera sensor configured to capture at least one target captured image and comprising an array of sensor elements; and a processor configured to: define a first sub-area of the array of sensor elements and a remaining sub-area of the array of sensor elements comprising the area of the array of sensor elements not comprised in the first sub-area of the array of sensor elements; at a first time, enable image capture using all sensor elements within the first sub-area of the array of sensor elements and no image capture using any sensor elements within the remaining sub-area of the array of sensor elements; displace the whole of the first sub-area of the array of sensor elements within of the array of sensor elements in response to relative movement of: a sensor frame of reference, defined by the camera sensor; and an image frame of reference, defined by an image; in response to displacement of the first sub-area of the array of sensor elements, redefine the remaining sub-area of the array of sensor elements comprising the area of the array of sensor elements not comprised in the displaced first sub-area of the array of sensor elements; and at a second time, enable image capture using all sensor elements within the displaced first sub-area of the array of sensor elements and no image capture using any sensor elements within the redefined remaining sub-area of the array of sensor elements.