There’s a reason we often see light painting done at night or during low light conditions. During the daytime, it’s just too bright to be able to do them effectively. You have to use fast shutter speeds to not blow everything out, which is the opposite of what you need for light painting.
But there is a way to light paint during the day, too. In his latest episode of Tube Stories, light painter extraordinaire Eric Paré uses neutral density filters to help bring that daylight under control.