The Skybell HD unit uses a slower frame rate at night to capture true color in very low light conditions giving you a more accurate account of the color of someone’s clothes at night. A feature I expect to see available in more security cameras in the future. I’m going to skip to the third best in doorbell cameras before we swing back to what I believe is easily the second best video doorbell camera when it comes to video quality. The Greet 2. 0 by Zmodo comes in third. I happen to use Zmodo products personally as back up cameras in indoor situations.