1. A device comprising a stereographic imaging arrangement configured to take a first raw image along a first optical axis and a second raw image along a second optical axis, wherein: the first and second optical axes have a separation at the imaging arrangement, and the imaging arrangement has a maximum imaging depth and a minimum imaging depth; wherein: the device is configured to transmit the first raw image and the second raw image to a receiving device along with an indication of a disparity range between a maximum disparity value and a minimum disparity value, the maximum disparity value is a measure of a difference between a location in the first raw image that represents the minimum imaging depth and a location in the second raw image that represents the minimum imaging depth, and the minimum disparity value is a measure of a difference between a location in the first raw image that represents the maximum imaging depth and a location in the second raw image that represents the maximum imaging depth.