The Bower Digital Macro Filter Kit includes three close-up diopters of +1, +2 and +4 magnification, a durable leatherette carrying case, a lens cap, and a "cap keeper" strap. These filters simply screw onto the front of any 62mm filter-size lens to magnify the image size while maintaining resolution and picture clarity, effectively transforming your lens into an amazing macro lens. As an added benefit, you get this increase in magnification without any exposure loss for truly no-fuss close-up photography. Plus, these filters are male/female threaded, which means you can combine them to achieve even greater magnification (all the way up to a total of +7 if you wish) -- or you can attach additional standard filters such as polarizers and UV filters, or even special effect and colored filters for even more interesting and creative photographs. >>> These macro close-up filters are ideal for photographing small items and focusing in on details of coins, stamps, flowers, insects, and jewelry -- as well as industrial photos of miniaturized components, medical and dental laboratory work and other scientific photography.