When macro photographing at a scale of 2.5X to 5X, it can be a challenge for photographers, especially in low light, to set the focus. By mounting the LED light on the front thread of the Laowa 25mm f/2.8 Ultra Macro lens, you gain a clearer view of your subject and can capture sharper images. Simply connect the LED ring light to a portable power bank using the included cable to use it.