Mid Speed PIV systems are designed for flow field applications in the range of around 100 Hz and above. The new compact Imager pro HS 500 camera is ideally suited for those applications and offers 1.2 Mpixel resolution at a maximum frame rate of 500 Hz and a dual frame mode for cross correlation with min. 100 ns time separation. The recorded data can be easily stored directly to disk with modern computer techniques. Together with LaVision's robust PIV laser series LPY with repetition rates up to 200 Hz and output energies up to 200 mJ the system is well suited for studies with moderate flow phenomena.