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 for obtaining three-dimensional digital image data, wherein: the first and second optical axes have a horizontal separation at the imaging arrangement, and the imaging arrangement has a maximum imaging depth and a minimum imaging depth; and a controller configured to cause the device to perform: defining a maximum disparity value 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, defining a minimum disparity value 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 transmitting the first raw image and the second raw image along with an indication of a disparity range between the maximum disparity value and the minimum disparity value.