With WDR, our cameras produce clear picture quality even under back light condition when there are both very bright and dark area simultaneously. For more accurate, vivid color reproduction during daytime use, an IR Cut Filter is automatically moved over the lens to block unwanted IR. At night, the filter is removed to deliver maximum visibility and                    
                                            
                                                        Kenneth I. —
                            Terrible.  we spent thousands with this company.  we started with one system, which worked ok, then upgraded to a 4k system