The best light for deer hunting (both brand and light in my opinion) is the Black Diamond Storm 500R on the red light setting. Not only did the Storm 500R perform the best in this test, it’s also the best hunting light I’ve used in the field as well. The max brightness and battery life are incredible and more than enough for most hunting situations, let alone deer hunting. The red light option also tends to be the best light color for deer hunting, because it has the lowest intensity of all the color options. While research shows that deer can’t necessarily differentiate between what color lights you use, they do see light intensity, which makes red the best option.