I love seeing our cameras out in the wild!! A little more focus might help. Also, you might want to switch out the camera facing out the door with a WDR model (Effio-P WDR maybe?) Not only is it slightly higher resolution, the WDR feature will help when the sun is in different positions since it is indoors facing outdoors. Is your DVR D1 or 960H? That could also help clear up the plate.
PS - Everyone please do not post our model numbers, website, email address, etc to this forum. I can almost guaranty they will be deleted. We will be more then happy to answer questions via PM.