Standard PIV system using double-pulse laser and double frame camera with high resolution is used to be applied to for high-speed flow. Nowadays PIV system (high-speed camera and high-power laser with high repetition pulse) with lkxlk pixels in image size and 2kHz in frame rate is available. This system is called as "Dynamic PIV', and the dynamic range for time and space are expanded 1 to 2000 and 1 to 100, respectively In this paper, we describe a system to expand the dynamic range for space and it is applied to free jet.