Adjustable focus lighting is the use of high-end lens dimming design, the spot can be freely sized into, such a design is to meet the same occasion to achieve a variety of uses of a lamp, to customers save more costs. After the spot size is freely adjusted, the accurate irradiation on the displayed items makes the items appear more beautiful. This product suitable for use in a storefront, cosmetics, villas, stores, supermarkets, 4 s shop and luxury brand shops and other places.