After a few break ins recently I put a camera right on the edge of the property facing the pavement to catch people's faces. I'm using an annke system which I believe is basically hikvision. The colourvu or nightchroma as they call it was amazing but the 2.8mm lens is too wide. I've now changed it to another annke camera which I believe is another hikvision DS-2DE4A425IWG-E. The quality is good but it's not as good as the other camera at night. What is the best way to improve night vision. A flood light or an IR light?