The Tamron 90mm f2.8 SP Di USD Macro Lens features redesigned optics, a VC (Vibration Compensation) system, a USD (Ultrasonic Silent Drive) and a moisture-resistant construction. Adopting a state-of-the-art optical design and a rounded diaphragm, this lens carries on the tradition of Tamron’s 90mm Macro lens in delivering stunning blur effects. The two XLD (Extra Low Dispersion) glasses and one LD (Low Dispersion) element ensure chromatic aberrations are to a minimum and images are crisp and clear. The VC (Vibration Compensation) image stabilisation mechanism reduces camera shake to deliver sharp images. The ’SP’ in the title indicates it is one of Tamron’s top-line ‘Special Performance’ lenses and ‘Di’ stands for Digitally Integrated, which means this lens can be used on cameras with full frame and APS-C sized sensors. The Tamron 90mm F2.8 Macro lens allows you to take natural portraits and stunning close-up photos of flowers and insects.