Change the camera sensitivity to light in low light
conditions, in order to enhace the brightness of the videos and photos. In low
light conditions, high ISO value will grant a brighter picture, but will also
increase the noise level, making it grainy.
ISO for video: Auto (Default), 400, 800, 1600, 3200, 6400
Lock ISO: The ISO will be locked when in manual mode of shutter speed and max ISO, generating a more stable video quality; better for post-editing.