Method, system and apparatus for capture of image data for free viewpoint video

A method for synthesising a viewpoint, comprising: capturing a scene using a network of cameras, the cameras defining a system volume of the scene, wherein a sensor of one of the cameras has an output frame rate for the system volume below a predetermined frame rate; selecting a portion of the system volume as an operational volume based on the sensor output frame rate, the predetermined frame rate and a region of interest, the operational volume being a portion of the system volume from which image data for the viewpoint can be synthesised at the predetermined frame rate, wherein a frame rate for synthesising a viewpoint outside the operational volume is limited by the output frame rate; reading, from the sensors at the predetermined frame rate, image data corresponding to the operational volume; and synthesising the viewpoint at the predetermined frame rate using the image data.