The Dorr mm. Macro Filter Kit
Includes:: the 1+, 2+ & 4+ dioptre close up filters. The close-up is screwed into the filter thread of your camera lens & means that you can get your shot closer to the subject. They make great shots for nature photography. The longer the focal length you use, the more effective the close-up lens. The maximum achievable with a standard 55 mm. focal length is Approx. 1: 2.5. A metal protective case is included to keep your filters in top condition.