sentences:  Panasonic published a detailed comparison of Venus III and IV, claiming better noise response by preserving detail, quick-response shutter release time-lag of around 0.008 second minimum and high power-efficiency for Venus IV.Reviews of cameras that compare the Venus IV engine to Venus III suggest that the newer engine is better, but the issue of noise reduction techniques losing detail, though improved, remains.Intelligent ISO sensitivity control is changed to hardware processing.