A
Alarm
Forget that pic, I've pulled one straight off the DVR now.
That photo is miles better than what mine can do. It's nice an clear. I do see it is well lit there too. Your camera is infrared right?
If you look there is LIGHTING there.
Sod the IR aspect to a degree. As I mentioned before, lighting, ambient or supplied is a vital key.
Also as mentioned the location.