A common matte painting task on that project was to create large backgrounds supporting wide angle camera movements . In that example , the camera focuses on CG planes going left to right over a 17000 pixels in width landscape ( as seen in the Quicktime pics below right ). Matte painting TD Hubert Zapalowicz first rendered a wire layout with Softimage , turning the camera movement into one single frame in a sufficient resolution for the final shot and containing strong references like the horizon and the ground . I could then create a background using these references and put together many pics from aerial shootings in a coherent scale and perspective .That big background was later reprojected and rendered with the shot camera in Softimage before going to the comp .