4k is the advanced version of 1080p. The resolution is higher than 1080p. Normally resolution is higher than four times. As such picture quality is clear and lively. This technology is used in drones for capturing good pictures. The drone will land and scan the area, measuring its speed as it passes over obstacles until it finds a safe spot to start returning back out again. When you drop from high enough above your target of interest, cameras can then take an aerial shot with three-dimensional depth map overlays that provide further detail into their surroundings. The screen remains as crystal clear and bright as ever even if you’re using your eyes to focus on an object while watching videos online. 4K security cameras offer image quality superior. With a higher resolution of 3840×2160 and at 8 megapixels.