One thing that caught my attention was the sharpness and definition of the dove caught in mid-flight with its wings in a full downstroke extension
Modern speed-camera systems use fully digital image-capture systems that are rigged in pairs with a baseline separation of anything between 75m to 20 km. The cameras work in tandem with an Automatic Number Plate Recognition (ANPR) system to confirm that the baseline calculation is being applied to one and the same vehicle.
https://www.jenoptik.co.uk/sites/vysionics.vmdrupal04.lablateral.com/files/specs3_vector_0.pdfThis incidentally is one reason why the driver received no penalty. The inadvertent presence of the dove effectively corrupted one of the datum points in the baseline. The police could prove it was the same vehicle in both shots from the ANPR data capture, but they couldn’t prove it was the same driver in both shots ! (Even though they might have been taken only 75m apart which takes about 5 seconds of travel at 54 km/ph).
ANPR systems in UK typically use an effective shutter speed of 1/600 for 30mph traffic rising to 1/1300 for 70mph traffic. They also rely on a pulsed infrared LED illumination source at 850nm with an IR corrected camera lens to prevent focus shift.
http://benchmarkmagazine.com/anpr-and-optimum-performance/