Outdoor security cameras are usually needed to keep an eye on action happening near and far, which can best be done by using a high definition security camera. As of 2020, 4K security cameras (also called 8MP cameras) are the recommended resolution of surveillance cameras for outside use as they provide the greatest detail while providing a wide field of view. A professional 4K security camera with 4mm lens provides up to 70ft of facial detail during the day with an 87 degree angle of view.