To control robots by vision is a contemporary challenge in many industrial applications. The capabilities of a robot vision system are highly significant for planning any robotic task and must, therefore, be precisely established. In this paper we describe the procedure to estimate a static and dynamic accuracy of a robot stereo vision system consisted of two identical 1 Megapixel cameras. The accuracy was evaluated in 2D and 3D environment. We describe the methodology, the test setup, and the results of the evaluation.