Caddx has released their new nano sized camera called ANT. This new nano sized camera weights only 2 grams. It is a bit heavier than RunCam Nano 3 camera (1.1 gram), but Caddx ANT has screw holes for easier mounting.
Camera also has wide range of the input voltage: from 3.7V up to 4S battery. Caddx ANT has 1.8mm lens with a 165° FOV.