In my opinion the pictures do not show anything. In the first picture you can not see the front of your car or the line. In the second picture your car is not there.
If your car is not even in the second picture, then why does the speed still show as 30km/h?
If they want to use the speed on the picture to convict you then I would be asking for full disclosure on the radar unit employed in the camera (manual, when was it installed, when was it tested, maintenance, etc).
Are you and at least one of your passengers willing to testify that you came to a full a stop?
Never tried to fight one of these tickets before myself, but if I was going to then this would be the one I would want!
But remember that the OWNER of the vehicle is being charged, not the driver, so if you just plead guilty and pay it will NOT be on your driving record and will NOT affect your insurance at all.