DESC: This large aperture telephoto macro lens enables you to shoot up to 1:1 life size close-ups. Its large F2.8 aperture makes it an ideal lens for digital SLR as well as film SLR cameras. Two Special Low Dispersion (SLD) glass elements control various color aberrations and assure high image quality. Super Multi Coating gives superb color performance whilst cutting down flare and ghost. Its compact, yet advanced, construction has an overall length of Length 137mm (5.4in.), maximum diameter of 79.6mm (3.1in.), filter size of ɻ72mm and weight of 895gr/31.6ounces.