This lens is optimized for macro shooting between 2.5X – 5X life-size. The lens is specially designed with an extended working distance (45mm at 2x & 40mm at 2.5x) and small lens barrel. This allows sufficient lighting on the object for easier shooting in the field. The lens is much more compact and lighter than other macro lenses. This lens also provides a greater depth of field compared to other extreme macro lenses in the market. The Laowa 25mm f/2.8 2.5-5X is developed for both professional and leisure macro photography, to be used in the field or indoor set-ups. An optional LED Ringlight and Tripod Collar are available for added control and precision operation.