1. An imaging system comprising: at least one imaging sensor per eye of a user; and a processor coupled to the at least one imaging sensor, the processor being configured to control the at least one imaging sensor to capture at least one image of a real world environment, wherein the processor is arranged to be communicably coupled with a display apparatus, the display apparatus comprising: an optical combiner; means for tracking a gaze direction of the user, at least one context image renderer for rendering a context image of the at least one image, and at least one focus image renderer for rendering a focus image of the at least one image, separate from the context image, further wherein the processor is configured to: receive, from the display apparatus, information indicative of the gaze direction of the user; determine a region of visual accuracy of the at least one image, based upon the gaze direction of the user; process the at least one image to: generate the context image at a first resolution by binning pixels of the at least one image, and generate the focus image at a second resolution higher than the first resolution by demosaicing the at least one image, wherein, when processing the at least one image, the processor is configured to crop the at least one image to generate the focus image in a manner that the focus image substantially corresponds to the region of visual accuracy of the at least one image; and communicate the generated context image and the generated focus image to the display apparatus, wherein the optical combiner of the display apparatus is operable to optically combine the generated content image and the generated focus image for display to the user.