BTW, you probably don't need cameras with built-in IR "night vision"... most of the time, built-in IR (which costs about $1-$2 for them to add) is done to compensate for a cheap camera that has poor low-light performance... here are a few samples from the VCM-24VF I have outside my front door:
Daytime:
Night, with the porch light:
Night, without porch light - only lighting is from street lights:
One street light is right at the base of the stairs (you can see its base to the left of the picture)... the others are 30m and 60m away:
