The primary goal of this study is to find a measurement method for motion blur which is easy to carry out and gives results that can be reproduced from one lab to another. This method should be able to also take into account methods for reduction of motion blur such as backlight flashing. Two methods have been compared. The first method uses a high speed camera that permits us to directly picture the blurred edge profile. The second one exploits the mathematical analysis of the motion blur formation to construct the blurred edge profile from the temporal step-response. Measurement results and method proposals are given and discussed.