An action camera flashlight will enable you to minimize noise even when shooting in poor light conditions. Due to this, you can shoot at a lower ISO. Besides, if you have a powerful flashlight, you can use higher shutter speed values without worrying that your images will become blurry. It makes it easier to capture pictures of a moving subject.To make the depth of field deeper, make sure to close the aperture. If you use a diffuser, remember that it makes shadows softer. You can solve this issue by making the beam stronger.